ERW, SSAW, LSAW (UOE) difference

ERW, SSAW, LSAW (UOE) difference
Conveying pipe by the different pipe process, can be divided into seamless steel tube (SML), mainly as oilfield gathering tube and small diameter internal high pressure natural gas pipeline, used for long distance oil and gas pipeline of few in number, the vast majority of long distance pipeline is to use high frequency straight seam welded pipe (ERW), spiral submerged arc welding pipe (SSAW), straight seam submerged arc welding pipe (LSAW) three. The table below for the process features of several kinds of steel pipe and quality performance contrast:
High frequency straight seam welded pipe (ERW steel pipe) according to the welding process is divided into different induction welding and resistance welding two forms, using hot rolled wide strip coil as raw material, through the continuous forming, bending, welding, heat treatment, sizing, straightening, cutting process, such as weld short compared with spiral welded pipe, high dimensional accuracy, uniform wall thickness, good surface quality, high pressure, etc. But the disadvantage is that only production of small diameter thin wall pipe, weld easy generation resistant, incomplete fusion, trench corrosion defects. Widely used such as city gas, crude oil transportation.
Spiral submerged arc welding pipe (SSAW) steel strip coil direction when the forming Angle with the center line of the pipe forming (adjustable), forming and welding, the welding seam into spiral, advantage is that the same specifications of the steel strip can produce various specifications of the steel tube diameter, raw material range is larger, the weld can avoid the principal stress, the stress condition is good, the disadvantage is that poor geometry size, weld length compared with straight seam length, easy to produce cracks, porosity, slag, weld defects such as welding, welding stress is tensile stress state. The rules and regulations of general oil and gas long distance pipeline design of spiral submerged arc welding pipe can only be used for 3, 4 regions. Abroad will improve after this process will be raw materials instead of steel plate, forming and welding, then welding and lean, cold expanding, after welding, the welding quality is close to UOE tube, at home there is no such process, is the direction of the spiral tube factory to improve in our country. "West-east gas" spiral tube is still used by traditional craft production, only the pipe hole enlargement. The United States, Japan and Germany, on the whole, negative SSAW, don't think it is proper to use SSAW trunk; Canada and Italy part use SSAW, Russia a small amount of use of SSAW, and have made a very strict complementary condition, due to historical reasons, most domestic trunk or use SSAW.
Straight seam submerged arc welding pipe (LSAW) based on single Zhang Zhonghou plate as raw material, the steel in the mold or molding machine medium-voltage (roll) into the pipe, using double-sided submerged arc welding and ChengJinHang production of hole enlargement. Its finished product specification range is wide, the toughness of the weld, plasticity, good uniformity and compactness, with large pipe diameter, wall thickness, strong resistance to high pressure, low temperature corrosion resistance, etc. In the construction of high strength, high toughness, high quality of long distance oil and gas pipeline, the steel tube are mostly straight seam submerged arc welding of large diameter thick wall pipe. According to the provisions of the API standard in large oil and gas pipelines, when the elevations, sea and city populated area in class 1, 2, straight seam submerged arc welding pipe is the only specify the applicable type. According to the forming methods of different can be divided into:
UOE welded pipe, sheet steel plate after edge bending, after U shape, O forming, welding, welding, mechanical cold expanding process;
JCOE welded pipe: according to "J - E - C - O" after welding, forming, welding process by cold hole enlargement, etc; HME welded pipe: the mandrel rolling method according to the "C - C - O" after forming, welding process by cold hole diameter, etc

API line pipe factory

API line pipe factory

API 5L line pipe according to the production process is divided into the submerged arc welding steel pipe, etc. 8. But the main use of Seamless steel tube (Seamless), high frequency straight seam Resistance Welding steel pipe (Electric - to hold the Arc Welding, shorthand for ERW), straight seam Submerged Arc Welding pipe (Longigudinally Submerged Arc Welding, shorthand for LSAW), spiral seam Submerged Arc Welding pipe, Spirally Submerged Arc Welding, shorthand for SSAW), etc.

Straight seam submerged arc welding pipe press forming method is divided into UO (UOE), RB (RBE), JCO (JCOE), etc. The steel plate in forming mould pressing U first, then pressed into an o-ring, and then evaluated for submerged arc welding, after welding are usually at the end or span range (Expanding) called the UOE welded pipe, hole diameter is not called UO of hole diameter welded pipe. The steel plate roller bend forming (Roll Bending), and then evaluated for submerged arc welding, after welding for RBE hole diameter welded pipe or not for hole enlargement RB welded pipe. Will the steel plate according to the order of type J - C - O forming, hole enlargement of JCOE welded pipe after welding or not for hole enlargement JCO welded pipe. Of the LSAW welded pipe is a widespread use of UOE. High frequency electric resistance welded pipe ERW mainly by high frequency current skin effect and proximity effect melted the tube embryo edge, then under the action of squeezing roller pressure welding, its characteristic is no foreign filler metal, heat affected zone is small, high production efficiency. Spiral welded pipe used in long distance line SSAW pipe has a long history, is our country at present mainly adopts the line pipe.

APISPEC5L pipeline standards:

API SPEC 5 l, the American petroleum institute standards

The national standard GB/T9711 - China

Coat-Plating Methods of Galvanized steel Pipes

Coat-Plating Methods of Galvanized steel Pipes

Hot dip galvanizing can protect steel pipes very well. When zinc is in liquid state, plate the steel with a thick layer of pure zinc after the complicated physical and chemical interaction and thus will make the hot dip galvanizing come into being. Also a zinc and steel alloy layer will be generated during this process. With this kind of layer and corrosion resistance feature, galvanized pipes can be applied to different severe corrosion environments, such as strong acid, alkali frog, etc., which is incomparable to other electro galvanizing.

 

Advantages of hot dip zinc galvanized pipes：

First, in general atmosphere, a very thin and dense layer of zinc oxide will be formed on the surface of zinc coating. It is hard to dissolve in water, therefore plays a certain protective effect to steel substrate. So, if the surface of steel pipe is covered with a quite thick and dense pure zinc layer, the steel substrate will be protected from contacting with any corrosive solution and avoid erosion.

Second, galvanized connection is very strong. When dissolving zinc and iron together, a good wear resistance will come into being and it can help the steel pipe become more strong and durable.

Third, after hot dip galvanizing, the mechanical properties of steel pipes will be improved effectively. Also, it can eliminate the stress of steel pipes in molding and welding process and benefit the lathe work.

Forth, due to the excellent ductility of zinc, its alloy layer can combine strongly with steel pipe so that plating will be protected from damage even in rolling, bending, wiredrawing, cold blanking and other molding situations.

What’s more, the surface of galvanized pipe will become bright and beautiful after the hot dip galvanizing.

The comparison of ERW steel pipe and LSAW steel pipe

The comparison of ERW steel pipe and LSAW steel pipe

The ERW steel pipe Resistance is high frequency straight seam welded pipe, the English Electric hold Welding, abbreviation abbreviation for ERW, used for transporting oil, gas and vapor liquid object, can meet the requirements of high and low pressure various, currently in the field of conveying pipe in the world occupies a pivotal position.
1, welded pipe refers to the common "submerged arc welding steel pipe," marked "SC" electrical engineering, can be used as water gas pipe can also make the threading pipe, thick.
2, line pipe, wire and tube, thin, with a "T", said can only do threading works.
3, ERW pipe is "high-frequency resistance welding steel tube", unlike ordinary welded pipe welding process, welding seam is composed of steel belt ontology of parent metal melting and mechanical strength than the general welding control. "LSAW steel pipe is the main technique straight seam submerged arc welding steel pipe features: 1 steel tube forming process, the steel plate uniform deformation, residual stress is small, the surface does not produce scratches. Processing of steel pipe diameter and wall thickness of the steel pipe size range, more flexibility, especially in the production of high grade thick wall steel tube, especially in large diameter thick wall pipe has incomparable advantage over other process, can satisfy the requirement of users in the steel pipe specification more; 2 use in the process of the internal and external welding (welding) after welding process, can be in the best position for welding, is not easy to appear the wrong side, partial and incomplete fusion welding defects, such as easy to control the welding quality. 3 for overall mechanical expanding, can effectively improve the size precision of steel tube, and improve the distribution of stress in steel tube, to avoid due to the damage caused by stress corrosion, is advantageous to the field of welding construction at the same time;
4 ,to 9 100% of steel pipe quality inspection, make the whole process of steel pipe production are under effective detection, monitoring, effectively ensure the product quality.
5 ,the whole production line all equipment with the function of the computer data acquisition system networking, realize the data real-time transmission, by the central control room for production.

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Dec 23, 2016, looking for new foreign trade in Hunan and 2016 annual Hunan network business awards ceremony held in Changsha, about a hundred foreign trade enterprises attended the meeting, Shinestar won 2016 "Hundreds of Millions ISPS Award ", the Executive Director of Shinestar Wang Li was invited to attend and receive the award.

The awarding activity is hosted by the Kaifu District People's Government, supported by Alibaba. The activities summed up the development of 2016 Hunan foreign trade business model, commended some foreign trade enterprises' outstanding achievement in e-commerce. It has promulgated the "Annual Top Ten ISPS," "Special Contribution Award", "Ten Million ISPS Award" and "Hundreds of Millions ISPS Award " and other eight awards. Shinestar won "Hundreds of Millions ISPS Award " with excellent sales performance, as well as the special contributions to develop Hunan e-commerce, which has been warmly concerned by the on-the-spot guest.

Shinestar is based in China,service global production of large steel enterprises, is committed to global customers with high quality steel products and services.In 2016, although the environment is not good, many companies have encountered had difficulties and challenges, but Shinestar has successfully bucked the trend,Steel sales exceeded 4 billion yuan, more gains of the 2016 "Hunan top 100 enterprises "award.Behind these achievements, the role played by e-commerce is pivotal. E-commerce for Shinestar to create more business opportunities to help brands better open visibility, but also to bring effective and convenient management of the Shinestar, in terms of reducing the cost of marketing is playing a significant role.

Shinestar Steel Group CEO Wang Li said Shinestar either from capital investment or talent reserves have attached great importance to the development of E-commerce,  has achieved preliminary results,2016 through the electric business platform for sales performance is proved by leaps and bounds.But e-commerce in the steel industry is  still in the early stages of development, great potential, in the end how to do, how to do a good job, is a very worthy of study. Shinestar also in unceasing exploration,  hope can be in the future and electricity business elite, industry experts to explore and research.

The Shinestar won "Hundreds of Millions ISPS Award "  honor,both a positive result of the past, but also an encouragement for future development. Shinestar will take this as a new starting point, continue to promote the development of e-commerce, and continuously enhance the core competitiveness of enterprises.To create "century of  steel enterprises in the field of overall service bench marking", and continuous efforts.

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Dec 23, 2016, looking for new foreign trade in Hunan and 2016 annual Hunan network business awards ceremony held in Changsha, about a hundred foreign trade enterprises attended the meeting, Shinestar won 2016 "Hundreds of Millions ISPS Award ", the Executive Director of Shinestar Wang Li was invited to attend and receive the award.

The awarding activity is hosted by the Kaifu District People's Government, supported by Alibaba. The activities summed up the development of 2016 Hunan foreign trade business model, commended some foreign trade enterprises' outstanding achievement in e-commerce. It has promulgated the "Annual Top Ten ISPS," "Special Contribution Award", "Ten Million ISPS Award" and "Hundreds of Millions ISPS Award " and other eight awards. Shinestar won "Hundreds of Millions ISPS Award " with excellent sales performance, as well as the special contributions to develop Hunan e-commerce, which has been warmly concerned by the on-the-spot guest.

Shinestar is based in China,service global production of large steel enterprises, is committed to global customers with high quality steel products and services.In 2016, although the environment is not good, many companies have encountered had difficulties and challenges, but Shinestar has successfully bucked the trend,Steel sales exceeded 4 billion yuan, more gains of the 2016 "Hunan top 100 enterprises "award.Behind these achievements, the role played by e-commerce is pivotal. E-commerce for Shinestar to create more business opportunities to help brands better open visibility, but also to bring effective and convenient management of the Shinestar, in terms of reducing the cost of marketing is playing a significant role.

Shinestar Steel Group CEO Wang Li said Shinestar either from capital investment or talent reserves have attached great importance to the development of E-commerce,  has achieved preliminary results,2016 through the electric business platform for sales performance is proved by leaps and bounds.But e-commerce in the steel industry is  still in the early stages of development, great potential, in the end how to do, how to do a good job, is a very worthy of study. Shinestar also in unceasing exploration,  hope can be in the future and electricity business elite, industry experts to explore and research.

The Shinestar won "Hundreds of Millions ISPS Award "  honor,both a positive result of the past, but also an encouragement for future development. Shinestar will take this as a new starting point, continue to promote the development of e-commerce, and continuously enhance the core competitiveness of enterprises.To create "century of  steel enterprises in the field of overall service bench marking", and continuous efforts.

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Dec 23, 2016, looking for new foreign trade in Hunan and 2016 annual Hunan network business awards ceremony held in Changsha, about a hundred foreign trade enterprises attended the meeting, Shinestar won 2016 "Hundreds of Millions ISPS Award ", the Executive Director of Shinestar Wang Li was invited to attend and receive the award.

The awarding activity is hosted by the Kaifu District People's Government, supported by Alibaba. The activities summed up the development of 2016 Hunan foreign trade business model, commended some foreign trade enterprises' outstanding achievement in e-commerce. It has promulgated the "Annual Top Ten ISPS," "Special Contribution Award", "Ten Million ISPS Award" and "Hundreds of Millions ISPS Award " and other eight awards. Shinestar won "Hundreds of Millions ISPS Award " with excellent sales performance, as well as the special contributions to develop Hunan e-commerce, which has been warmly concerned by the on-the-spot guest.

Shinestar is based in China,service global production of large steel enterprises, is committed to global customers with high quality steel products and services.In 2016, although the environment is not good, many companies have encountered had difficulties and challenges, but Shinestar has successfully bucked the trend,Steel sales exceeded 4 billion yuan, more gains of the 2016 "Hunan top 100 enterprises "award.Behind these achievements, the role played by e-commerce is pivotal. E-commerce for Shinestar to create more business opportunities to help brands better open visibility, but also to bring effective and convenient management of the Shinestar, in terms of reducing the cost of marketing is playing a significant role.

Shinestar Steel Group CEO Wang Li said Shinestar either from capital investment or talent reserves have attached great importance to the development of E-commerce,  has achieved preliminary results,2016 through the electric business platform for sales performance is proved by leaps and bounds.But e-commerce in the steel industry is  still in the early stages of development, great potential, in the end how to do, how to do a good job, is a very worthy of study. Shinestar also in unceasing exploration,  hope can be in the future and electricity business elite, industry experts to explore and research.

The Shinestar won "Hundreds of Millions ISPS Award "  honor,both a positive result of the past, but also an encouragement for future development. Shinestar will take this as a new starting point, continue to promote the development of e-commerce, and continuously enhance the core competitiveness of enterprises.To create "century of  steel enterprises in the field of overall service bench marking", and continuous efforts.

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Dec 23, 2016, looking for new foreign trade in Hunan and 2016 annual Hunan network business awards ceremony held in Changsha, about a hundred foreign trade enterprises attended the meeting, Shinestar won 2016 "Hundreds of Millions ISPS Award ", the Executive Director of Shinestar Wang Li was invited to attend and receive the award.

The awarding activity is hosted by the Kaifu District People's Government, supported by Alibaba. The activities summed up the development of 2016 Hunan foreign trade business model, commended some foreign trade enterprises' outstanding achievement in e-commerce. It has promulgated the "Annual Top Ten ISPS," "Special Contribution Award", "Ten Million ISPS Award" and "Hundreds of Millions ISPS Award " and other eight awards. Shinestar won "Hundreds of Millions ISPS Award " with excellent sales performance, as well as the special contributions to develop Hunan e-commerce, which has been warmly concerned by the on-the-spot guest.

Shinestar is based in China,service global production of large steel enterprises, is committed to global customers with high quality steel products and services.In 2016, although the environment is not good, many companies have encountered had difficulties and challenges, but Shinestar has successfully bucked the trend,Steel sales exceeded 4 billion yuan, more gains of the 2016 "Hunan top 100 enterprises "award.Behind these achievements, the role played by e-commerce is pivotal. E-commerce for Shinestar to create more business opportunities to help brands better open visibility, but also to bring effective and convenient management of the Shinestar, in terms of reducing the cost of marketing is playing a significant role.

Shinestar Steel Group CEO Wang Li said Shinestar either from capital investment or talent reserves have attached great importance to the development of E-commerce,  has achieved preliminary results,2016 through the electric business platform for sales performance is proved by leaps and bounds.But e-commerce in the steel industry is  still in the early stages of development, great potential, in the end how to do, how to do a good job, is a very worthy of study. Shinestar also in unceasing exploration,  hope can be in the future and electricity business elite, industry experts to explore and research.

The Shinestar won "Hundreds of Millions ISPS Award "  honor,both a positive result of the past, but also an encouragement for future development. Shinestar will take this as a new starting point, continue to promote the development of e-commerce, and continuously enhance the core competitiveness of enterprises.To create "century of  steel enterprises in the field of overall service bench marking", and continuous efforts.

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Shinestar Won 2016 Alibaba Hundreds of Millions ISPS Award

Dec 23, 2016, looking for new foreign trade in Hunan and 2016 annual Hunan network business awards ceremony held in Changsha, about a hundred foreign trade enterprises attended the meeting, Shinestar won 2016 "Hundreds of Millions ISPS Award ", the Executive Director of Shinestar Wang Li was invited to attend and receive the award.

The awarding activity is hosted by the Kaifu District People's Government, supported by Alibaba. The activities summed up the development of 2016 Hunan foreign trade business model, commended some foreign trade enterprises' outstanding achievement in e-commerce. It has promulgated the "Annual Top Ten ISPS," "Special Contribution Award", "Ten Million ISPS Award" and "Hundreds of Millions ISPS Award " and other eight awards. Shinestar won "Hundreds of Millions ISPS Award " with excellent sales performance, as well as the special contributions to develop Hunan e-commerce, which has been warmly concerned by the on-the-spot guest.

Shinestar is based in China,service global production of large steel enterprises, is committed to global customers with high quality steel products and services.In 2016, although the environment is not good, many companies have encountered had difficulties and challenges, but Shinestar has successfully bucked the trend,Steel sales exceeded 4 billion yuan, more gains of the 2016 "Hunan top 100 enterprises "award.Behind these achievements, the role played by e-commerce is pivotal. E-commerce for Shinestar to create more business opportunities to help brands better open visibility, but also to bring effective and convenient management of the Shinestar, in terms of reducing the cost of marketing is playing a significant role.

Shinestar Steel Group CEO Wang Li said Shinestar either from capital investment or talent reserves have attached great importance to the development of E-commerce,  has achieved preliminary results,2016 through the electric business platform for sales performance is proved by leaps and bounds.But e-commerce in the steel industry is  still in the early stages of development, great potential, in the end how to do, how to do a good job, is a very worthy of study. Shinestar also in unceasing exploration,  hope can be in the future and electricity business elite, industry experts to explore and research.

The Shinestar won "Hundreds of Millions ISPS Award "  honor,both a positive result of the past, but also an encouragement for future development. Shinestar will take this as a new starting point, continue to promote the development of e-commerce, and continuously enhance the core competitiveness of enterprises.To create "century of  steel enterprises in the field of overall service bench marking", and continuous efforts.

In Stock ERW Steel Pipe Price 2016/12/24

In Stock ERW Steel Pipe Price 2016/12/24

API line pipe manufacturer

API line pipe manufacturer

Galvanized pipe using sulfate electroplating of zinc-iron alloy technology, is the production line between the slot and slot are perforated without any solution out or overflow. The production process of the process consists of the circulatory system, the tank solution that acid-base liquid, electroplating solution, the light and passivation solution, only to not use the system to leak or discharge, the production line only 5 cleaning tank, Reuse of regular emissions, in particular, after the passivation is not washed without the production of waste water production process.

The Application of Galvanized Steel Pipe

The Application of Galvanized Steel Pipe

In order to improve the corrosion resistance of steel pipe, the general steel pipe galvanized. Galvanized steel sub-hot galvanized and galvanized two kinds of hot galvanized galvanized layer thickness, low cost of electro-galvanized, the surface is not very smooth. Oxygen Oxygen Welded Pipe: used for steel-making oxygen blowing pipe, the general use of small diameter welded steel pipe, specifications from 3 / 8-2 inch eight. With 08,10,15,20 or 195-Q235 made of steel, in order to prevent corrosion, and some to be effective aluminizing treatment.

Most of the old house is galvanized pipe is used, and now the kind of gas heating pipe is galvanized pipe, galvanized pipe as a water pipe, use a few years later, the tube produces a lot of rust, yellow water outflow not only Pollution, sanitary ware, but also mixed with non-smooth wall breeding bacteria, corrosion caused by heavy metal content in the water is too high, serious harm to human health. The sixties and seventies, the international developed countries began to develop new pipe, and gradually banned galvanized pipe. China's Ministry of Construction and other four ministries also issued a clear from the 2000 ban galvanized pipe, the new district of the cold water pipe has been rarely used galvanized pipe, and some of the district's hot water pipe is galvanized pipe.

In Stock ERW Steel Pipe Price 2016/12/20

Updated Price List For In Stock ERW Steel Pipe On December,20,2016

Glavanized Steel Pipe Manufacturing

Glavanized Steel Pipe Manufacturing

Galvanized pipe using sulfate electroplating of zinc-iron alloy technology, is the production line between the slot and slot are perforated without any solution out or overflow. The production process of the process consists of the circulatory system, the tank solution that acid-base liquid, electroplating solution, the light and passivation solution, only to not use the system to leak or discharge, the production line only 5 cleaning tank, Reuse of regular emissions, in particular, after the passivation is not washed without the production of waste water production process.

Hunan Shinestar Steel Research Institute

Hunan Shinestar Steel Research Institute

If Shinestar is a ship sailing in the sea, then the company management is the captain lead the direction. In 2016, Hunan Shinestar Steel Research Institute has been founded, which is the first independent institute been set by enterprise. It will provide technical support to Shinestar to promote our company to a new level.
Hunan Shinestar Steel Research Institute belongs to the Chinese steel industry regional industry organization, will strictly follow the party's policies to service steel industry and social, adhere to innovation and development, establish and perfect industry coordination and self-discipline Mechanism to safeguard the interests of the industry as a whole and the legitimate rights and interests of enterprises. Developing our role in the industry between enterprises, and continuously improve the competitiveness of China's steel industry in the international market and promote the healthy development of the steel industry.
The service scope of Hunan Shinestar Steel Research Institute including:
Firstly, according to the relevant state policies and regulations, combined with industry characteristics, make rules for industry regulations and establish industry self-regulatory mechanism, constantly regulate the industry behavior. Especially in the promotion of industrial restructuring, elimination of backwardness, promote technological progress, strengthen energy conservation and environmental protection, improve the quality of industry operation, etc.
Secondly, carrying out industry research, participate in the development of industry development planning, industrial policies and regulations for the government and industry to strengthen macro-control and management , for policy support.
Thirdly, collecting, collating, grading release domestic and international steel industry market conditions and industry information. Monitoring the economic operation of the industry trend, to carry out special studies. Offering service to iron and steel enterprises in the management, development strategies and economic and technical indicators for analysis and evaluation.
Fourth, actively participate in the formulation, revision of the industry on technology, economy, management standards, norms, organizations to promote the implementation of member units to carry out inspection, assessment work.
Fifth, actively participate in the industry of major investment, transformation, development projects of the advanced nature, feasibility and feasibility of the early demonstration. Promote scientific and technological innovation, management innovation and product development, the development of common industry technology organizations and the promotion and application of scientific and technological achievements.
Sixth, organize sale's training, research and development trade skills, job evaluation standards and assessment, organize the steel industry vocational skills competitions, improve the professional and technical of staffs.
Seventh, actively carry out exchanges and cooperation with international organizations and overseas enterprises, keep in touch with international steel industry organizations, exchange information, negotiation, promote foreign economic and technological exchanges and cooperation, and organize companies to participate in international exhibitions.
Eighth, commissioned by the industry, according to the law to carry out the steel industry statistics, investigation, analysis and reporting and other jobs. Representation or coordination of anti-dumping, countervailing, safeguard measures related work, coordination of iron ore imports, coordination of iron and steel products import and export.
In the future, Hunan Shinestar Steel Research Institute will continue to enlarge the team, engage professors for consultancy, cooperate with domestic and foreign steel industry experts for management consulting, market research, management training, customer survey and competitor investigation. For all-round support for the wisdom of China's steel industry to contribute to the development.

Technical Requirement of Galvanized Steel Pipe

Technical Requirement of Galvanized Steel Pipe

1, grades and chemical composition

Galvanized steel grades and chemical composition should be consistent with GB 3091 under the black tube steel grades and chemical composition.

2, the manufacturing method

The manufacturing method of the black tube (furnace welding or welding) is selected by the manufacturer. Galvanized by hot-dip galvanizing method.

3, thread and pipe joints

3.1 galvanized steel pipe with threaded delivery, the thread should be in galvanized after the car system. Threads shall comply with YB 822.

3.2 steel pipe joints should be consistent with the provisions of YB 238; malleable iron pipe fittings should be consistent with YB 230 requirements.

4, mechanical properties of galvanized steel pipe before the mechanical properties should be consistent with the provisions of GB 3091.

5, uniformity of galvanized galvanized steel pipe galvanized layer should be uniformity of the test. Steel pipe samples in copper sulfate solution for 5 consecutive impregnation shall not be red (copper color).

6, cold bending test Nominal diameter of not more than 50mm galvanized steel pipe should be cold bending test. Bending angle of 90 °, bending radius of 8 times the diameter. Test with no filler, the specimen weld should be placed in the bending direction of the outer or upper. After the test, the sample should not have cracks and zinc peeling off the same.

7, water pressure test Water pressure test should be carried out in the black, eddy current testing can also be used instead of water pressure test. Test pressure or eddy current inspection shall be in accordance with GB 3092 for the size of the reference sample.

In Stock ERW Steel Pipe Price 2016/12/20

In Stock ERW Steel Pipe Price 2016/12/20

carbon steel pipe manufacturing

carbon steel pipe manufacturing

The raw material of carbon steel pipe is round pipe billet. The round pipe billet is cut by the cutting machine and processed into the billet with the length of 1 meter. And then sent to th furnace tobe heated by the conveyer belt. The billet is fed into a furnace and heated at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. Furnace temperature control is a key issue. After the round tube billet to go through the pressure piercing machine to wear empty. Generally more common punching machine is conical roller piercing machine, this punching machine production efficiency is high, product quality is good, perforation expansion diameter large, can wear a variety of steel. After piercing, the round tube blank has been three-roll cross-rolling, rolling or extrusion. Squeeze after the tube diameter. Sizing machine through the high-speed rotation of the cone drill bit into the steel embryo drilling, the formation of steel pipe. The inner diameter of the pipe is determined by the outside diameter of the sizing bit. Steel pipe after sizing, into the cooling tower, through the water cooling, the cooling pipe, it is necessary to be straightened. After straightening by the steel pipe sent to the metal detector (or water pressure test) for internal testing. If the pipe has cracks, bubbles and other problems, will be detected. After the quality of steel pipe but also through rigorous manual selection. After the quality inspection of steel pipe, spray paint with the number, size, production lot number. And suspended by the crane into the warehouse.

Carbon Steel Pipe Production

Carbon steel pipe can be divided into seamless steel pipe, straight seam steel pipe, spiral steel pipe, high-frequency welded steel pipe. Rolled seamless carbon steel pipe is the raw material of round tube, tube embryo to be cut through the cutting machine into a length of about 1 m of blank, and the conveyor belt to the furnace heating. The billet is fed into a furnace and heated at a temperature of about 1200 degrees Celsius. The fuel is hydrogen or acetylene. Furnace temperature control is a key issue. After the round tube billet to go through the pressure piercing machine to wear empty. Generally more common punching machine is conical roller piercing machine, this punching machine production efficiency is high, product quality is good, perforation expansion diameter large, can wear a variety of steel. After piercing, the round tube blank has been three-roll cross-rolling, rolling or extrusion. Squeeze after the tube diameter. Sizing machine through the high-speed rotation of the cone drill bit into the steel embryo drilling, the formation of steel pipe. The inner diameter of the pipe is determined by the outside diameter of the sizing bit. Steel pipe after sizing, into the cooling tower, through the water cooling, the cooling pipe, it is necessary to be straightened. After straightening by the steel pipe sent to the metal detector (or water pressure test) for internal testing. If the pipe has cracks, bubbles and other problems, will be detected. After the quality of steel pipe but also through rigorous manual selection. After the quality inspection of steel pipe, spray paint with the number, size, production lot number. And suspended by the crane into the warehouse.

Cold drawn (rolled) carbon steel seamless steel pipe: round tube → heating → punching → start → annealing → pickling → oiling (copper) → multi-pass cold drawing (cold rolling) → tube → heat treatment → straightening → water pressure test (testing) → marking → storage

Carbon steel seamless steel pipe because of its manufacturing process is different, is divided into hot-rolled (extrusion) seamless steel tubes and cold drawn (rolled) seamless steel pipe two. Cold drawn (rolled) tube is divided into two kinds of round tube and special-shaped tube.

In addition, GB / T17396-1998 (hot-rolled seamless steel pipe for hydraulic support), GB3093-1986 (diesel engine high-pressure seamless steel pipe), GB / T3639-1983 (cold drawn or cold-rolled precision seamless steel pipe), GB / T3094-1986 (cold drawn seamless steel pipe shaped steel pipe), GB / T8713-1988 (hydraulic and pneumatic cylinder with precision diameter seamless steel pipe), GB13296-1991 (boiler, heat exchanger with stainless steel seamless pipe), GB / T14975 (Seamless Steel Tube for Automotive Axle Bushings), API SPEC5CT-1999 (Casing and Tubing), GB / T14976-1994 (Seamless Steel Pipe for Fluid Conveying) Specification) and so on.

Galvanized Steel Pipe

Galvanized steel pipe is the surface with hot-dip galvanized or electro-galvanized layer. Galvanized steel can increase corrosion resistance and prolong life. Galvanized steel pipe is widely used, except for water, gas, oil, generally low-pressure fluid line pipe, also used oil heater oil industry in particular, marine oil wells pipes, pipelines, chemical coking equipment, condensing coolers, washing coal distillate oil exchange used tubes, as well as the bridge piles, mine tunnel support frame with a pipe.

Galvanized steel pipe is divided into cold galvanized pipe and hot galvanized pipe, which is more extensive use of galvanized steel, hot galvanized steel is widely used in construction, machinery, mining, chemical, railway vehicles, the automotive industry, roads, bridges, container, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery and other manufacturing industries. hot galvanized pipe is molten metal reacting with the iron matrix alloy layer, so that the substrate and coating combination of both. Galvanized pipe is first pickled, the steel surface in order to remove iron oxide, after pickling, cleaning tank by mixing an aqueous solution of ammonium chloride or zinc chloride and zinc chloride or ammonium chloride solution, and then into hot dip tank. Galvanized with coating uniformity, strong adhesion, long life and other advantages. Hot dip galvanized steel substrate with molten bath complicated physical, chemical reactions, the formation of corrosion-resistant zinc-iron alloy structure closely layer. Alloy layer and layer of pure zinc, steel base blend. Therefore it resistant to corrosion.

Shinestar chairman Guoyu Yi re-elected yueyang Representative of the Municipal People's Congress

Shinestar chairman Guoyu Yi re-elected yueyang  Representative of the Municipal People's Congress

November 28th .Grand opening of the seventeenth people's Congress of Xiangyin County, Yueyang City.Shinestar chairman Guoyu YI was elected to the Yueyang Municipal People's Congress, this is Mr.  Guoyu YI second award.

Yi Guoyu incumbent Shinestar Group Co., Ltd.Shinestar has been established since 1993.Yi Guoyu has always been a pragmatic entrepreneurial spirit of innovation and the trend of the times ahead of strategic decision pilot Shinestar .Shinestar has come out a way of development.Now the shinestar accumulate steadily.Owns 23 subsidiaries.China won the top 500 private enterprises.100 strong enterprises in Hunan Province.Created the Chinese steel pipe exports third.Hunan steel pipe sales of first outstanding achievements.At present, shinestar has set up in quality based production.To serve as a whole.Global trade as an engine for the improvement of the group platform.Has established the domestic "aircraft carrier grade" the status of the overall service provider of steel procurement.

As the entrepreneur, Guoyu Yi always think good thoughts , more actively involved in the construction of the city Xiangyin in Yueyang and thanksgiving return society. Both support the hometown construction, and to help nursing homes, laid-off workers, Guoyu Yi have special pure heart, holding the glorious cause tradition. Since 2012, he devoted to respect business, sponsored yueyang xiangyin many nursing homes; Support hometown construction, yueyang xiangyin tiejiaozui town highway construction project; Successively aid more than hunan steel market dealers, help them through struggling; More help more than 100 laid-off workers re-employment.

This term is the glory of Guoyu Yi and Shinestar of glory. Guoyu Yi said that he would collect public opinion, exert good NPC delegates responsibilities and advice for the development of yueyang city and xiangyin, render contribute their own. National People's Congress representative shall, on behalf of the interests of the people and will, in accordance with the law, exercise their functions and powers on behalf of the representative duty actively, give full play to their role as the representative. NPC delegates should close contact with the masses of the people, more frequent visit contact with voters, listen to and reflect their views and requirements, to serve the people. And all this is closely related to Shinestar business philosophy and mission, "internal achievements of employees, client, foreign achievement", its essence is to stand in the perspective of "people", thinking the management and development of the enterprise.

Finally, chairman of Guoyu Yi to concern for the development of party and government organs, enterprises and institutions, social people from all walks of life and the masses of customers, the most sincere thank you, thank you has long been a concern for ChengShi da, help, trust and support. Thanks everybody's care, give ChengShi of infinite strength and inspiration to Shinestar in building "steel overall service in the field of benchmarking enterprise" in one hundred and advance bravely .