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Founded in 1995, Tianjin Zhongshun Petroleum Steel Pipe Company Ltd. is a large-scale manufacturer specializing in the production of ERW steel pipes and DSAW steel pipes. Our technicians can produce a variety of sizes of longitudinal welded pipes and spiral welded pipes according to standards such as API, ASTM, EN, JIS, BS, and more, with steel grades of Gr A, Gr B, X42-X100, H40, J55, S195T, S355J2H, ST33, ST42, STK400, STK500, Q215, Q235, Q345, and others. Our range of steel pipes often serve casting tube, steel piles, structural hollow section, etc. in industries such as construction, oil drilling, etc. They are also widely used to transfer liquid and gases such as water, petroleum, natural gas, coal gas, and more.

With investments totaling 37 million USD, we now operate from a base of over 300,000 square meters with 450 employees, and we produce 600,000 tons of welded steel pipes annually. We are located in Da Qiu Zhuang, a town well-known all over the world for its steel pipe production. Here we enjoy convenient transportation by sea, land and air, so we can easily service our clients all over the world.

Production Capacity
Advanced equipment we use in our pipe production includes 3 longitudinally H.F. welded pipe mills, 6 spirally double-side submerged arc welded pipe mills and 2 anti-corrosion pipe mills. We can produce longitudinally welded steel pipes ranging in diameter from 21.3mm to 630mm with wall thicknesses ranging from 1.8 to 22.2mm, and spirally double-sided submerged arc welded steel pipe with diameters ranging from 219mm to 3040mm and wall thickness ranging from 5.0 to 30mm are available. Meanwhile, we can do all kinds of coating, such as FBE, 2PE, 3PE, 2PP, 3PP, epoxy coal asphalt, internal and external epoxy coating, cement mortar lining, and more.

Quality Control
It is our goal to provide only the highest quality pipe to our clients. Therefore, we complete inspections during production, which includes every aspect from incoming raw material, through each step of the welding process and to product storage, and delivery. All inspections are geared toward ensuring we are in compliance with international standards. In addition, superior welding quality is assured by ERW and SAW welders who are certified for expert welding quality, and on-line and off-line UT inspections, hydrostatic tests and metallographic inspections are made in the ERW pipe production line. What's more, the laser seam tracking system and the X-ray imaging NDT technique is also adopted to improve welding quality. Combined, these steps guarantee that our alloy steel pipe and non-alloy steel pipe products are high quality and satisfy our clients all over the world.

Cost Control
While maintaining the quality we are known for, we also seek to reduce our production costs, so we can continue to offer our products at the lowest prices. The use of automatic welding equipment also increases our production and lowers our labor cost greatly. An automatic flux drying machine and Lincoln welding machine also increase our efficiency. Relationships with local suppliers enable us to gain materials at reduced rates, which we can then pass on to our clients. Our location in Da Qiu Zhuang town provides us with easy access to labor, as well as major land, sea and air transportation methods.

Qualifications and Standards
We have certificates of ISO 90001: 2008 International Quality Management System Certifications, and our steel pipes have obtained the API 5L and API 5CT Certificates issued by the American Petroleum Institute, EN10217-1, EN10217-2, EN10219-1 and EN10219-2 Certificates issued by EU and Russian GB/T9711.1 and GB/T9711.2 Certificates. Due to our products' high quality and competitive prices, our pipe is very popular in the U.S., Australia, Russia, Brazil, Iran, The United Arab Emirates, India, Malaysia, Thailand, South Korea, Singapore, and more.

We at Zhongshun lay great emphasis on credibility, innovation, quality and talents, so we have our obvious advantages in technology, management and talents over other steel pipe manufacturers, which can service our clients better. If you would like further information, please feel free to contact us. We also welcome visitors to come see us in person!

Main Products
    1. API 5L SSAW Steel PipeThe raw materials of the same width can be processed in different forming angles to manufacture SSAW steel pipes in various diameters.
    1. EN 10217-2 ERW Steel PipeOur EN 10217-2 standard ERW steel pipes are either alloy steel pipes or non-alloy steel pipes. With circular sections, they meet the testing requirements of both TR1 and TR2. This range of welded steel tube is ideal for pressure equipment used at high temperature conditions.
    1. EN10219-1 Straight Seam Steel PipeOur EN10219-1 standard straight seam steel pipes are cold formed pipes with circular, square or rectangular cross sections. The special manufacturing technique for the ERW steel pipe eliminates the demand for heat treatment after pipe forming.
    1. Line PipesWe can offer two categories of line pipes: SSAW steel pipe and black steel pipe. By changing the forming angle, our range of API 5L line pipes can be made into various diameters while using raw materials of the same width.
    1. Galvanized Steel PipeThe galvanized pipe is a great solution to transfer low pressure liquid, gas, etc. Contact us now if you are looking for galvanized steel tube for delivering water, sewage, fuel gas, air, heating steam, etc.
    1. ASTM A252 Longitudinal Welded PipeOur longitudinal welded pipe is produced in accordance with the ASTM A252 Standard Specification for Welded and Seamless Steel Pipe Piles. During the manufacturing process for this range of ERW steel pipe, heat treatment, non-destructive test and hydrostatic test are not required.