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  • Home Founded in 1995, Zhongshun Petroleum Steel Pipe Company Ltd. is a manufacturer of spiral steel pipe, ERW steel pipe, galvanized steel pipe and anticorrosive steel pipe in China. Our main products such as the straight seam pipe and the spiral welded pipe are available with various specifications, according to API, ASTM, EN, JIS, BS, DIN and GB standards. The grades of steel used for our steel pipes include GR.A, X42, H40, J55, K55, S195T, STK400, and Q345.
  • Proudcts We can produce a variety of steel tubes with a longitudinal weld and spiral steel pipes with different specifications according to API, ASTM, EN, JIS, BS, DINand GBstandards. The steel types for our products are GR.A, GR.B, X42- X100, H40, J55, K55, S195T, S235JRH, S355JOH, S355J2H, ST33, ST42, STK400, STK500, Q235and Q345, etc...
  • Spiral Steel PipesThe spiral steel pipe is ideal for the long distance transferring of water, petroleum, natural gas, coal gas and pulp, etc. Our welded spiral pipes can also be used in the chemical, electricity, irrigation, structural engineering and steel pile industries.
  • API 5L SSAW Steel PipeThe spirally submerged arc welding method makes sure all our spiral welded pipes have great roundness and straightness, thus allowing us to eliminate the pipe straightening process.
  • GB/T 9711.1 HSAW Steel PipeDuring the welding process, the steel is heated by one or more electric arcs between the bare metal's consumable electrodes and the steel plate, thus achieving metallic bonding.
  • GB/T 9711.2 Spiral Welded Steel PipeIt is typically manufactured in the following steps. Firstly, the steel belts or plates should be molded. Secondly, the joint edging zone should be padded by metals and finally, the joints should be welded.
  • ASTM A252 Spiral Steel Pipe This range of spiral steel pipe conforms to the ASTM A252 standard. During its production process, heat treatment, non-destructive test and hydrostatic test are not required.
  • EN 10219-1 SSAW Steel PipeThis range of SSAW steel pipe conforms to EN 10219-1 standard specifications. As cold formed pipe sections, our SSAW pipes eliminate the demand for heat treatment after forming.
  • EN 10219-2 Welded Steel PipeThe maximum outer diameter for the spiral pipe is 3048mm and the maximum wall thickness is 30mm. The maximum length for a single welded tubing reaches 20000mm.
  • EN10217-5 Spiral Welded Steel PipeOur EN 10217-5 spiral welded steel pipe can be either alloy steel pipe or non-alloy steel pipes. It is mainly applied as boiler pipes due to its great performance under high pressure and high temperature conditions.
  • ERW Steel PipesThe ERW steel pipe is regularly utilized as the raw material to build water pipelines, natural gas pipelines, petroleum pipelines, etc. for long distance transferring of water, petroleum, natural gas, coal gas and pulp, etc. It can also be used in the chemical and electricity transmission industries.
  • API 5L Black Steel PipeAll our black steel pipes are manufactured according to the API 5L specification for line pipes. They are extensively used in transferring corrosive matters such as petroleum and natural gas.
  • API 5CT ERW Steel PipeDuring the API 5CT ERW steel pipe manufacturing process, the tempering heat treatment is simulated around the welding line. Both ends of the longitudinal welded pipe are perpendicular to the center line and there should be no blurs on the interior seamed edge or the exterior edge.
  • 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.
  • GB/T9711.1 ERW Steel PipeAccording to GB/T 9711.1 standard, this series of ERW steel pipe can be manufactured without being pressurized. The filling parts are composed of metals which are electronically welded.
  • GB/T 3091 Straight Seam Steel PipeThe straight seam steel pipe is applicable for low pressure liquid delivery. It often serves as the water pipe, steam pipe, and air system pipe, thus transferring water, air and heating steam, etc. This series of straight seam welded pipe is produced in accordance with the GB/T 3091-2008 standard.
  • EN 10217-1 Black Steel Pipe
  • 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.
  • 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.
  • EN10219-2 ERW Steel PipeThis range of ERW steel pipe is available with varied shapes of cross sections, including circular, square and rectangular. Utilizing the cold welding technique, the longitudinal welded pipe is exactly manufactured according to the EN10219-2 standard specification.
  • 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. Our galvanized steel pipe can also serve as structural steel pipe for equipment framework construction applications.
  • ASTM A252 Piling PipesThe ASTM A252 piling pipe is grouped into two categories which are ERW welded type and SAW welded type including longitudinal (LSAW) and helical or spiral (SSAW). It is manufactured using high quality ...
  • Spiral Welded Pipe with Flanged EndsOur spiral welded pipe is a kind of carbon steel pipes which are fitted with flanges at both ends. Aside from the flanged ends, our company also offers other pipe ends such as beveled ends, sockets ends...
  • Coating Steel PipesPlastic coating for steel pipes can prevent or minimize the possibility of pipeline corrosion. Plastic coating systems for steel tubes include the PE coating and the PP coating. We can also provide steel tubing with FBE coating.
  • 3PE Coating Steel PipeThe 3PE coating steel pipe refers to steel tubing with three layers of PE coating. The multiplayer steel pipe coating provides our products with good impact resistance, abrasive resistance, shock resistance, acid resistance, alkali resistance, salt-tolerance, electric insulation, voltage resistance, high quality and long service life.
  • 2PE Coating Steel PipeThe 2PE coating steel pipe is milky white, transparent and nontoxic. Due to advanced coating technology and quality steel pipe coating material, this range of steel tube offers high electric strength, acid resistance, alkali resistance, salt-tolerance, electric insulation, cold resistance and impact resistance.
  • 3PP Coating Steel PipeThe 3PP coating steel pipe refers to steel tubing with three layers of PP coating. It offers high electric strength, acid resistance, alkali resistance, salt-tolerance, electric insulation, long service life, thermal endurance and impact resistance. Because of advanced steel pipe coating technology, this type of plastic coated steel pipe features well-bonded coatings.
  • FBE Coating Steel PipeThe single-layer FBE coating steel pipe has properties of high electric strength, acid resistance, alkali resistance, long service life, high quality and salt tolerance. Due to these advantages, our range of product can be utilized as electrical conduits, chemical resisant pipes, etc.
  • 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.
  • Steel PilesDue to advanced production techniques, our steel pile can be manufactured without the demand for heat treatment, non-destructive test and hydrostatic test.
    Our steel pipe piles are tubular piles with uniform wall thickness. They are often used as structural support piles and cast-in-place concrete piles in construction industry.
  • API 5CT CasingsOur API 5CT casing tube are ERW steel pipe with longitudinal welded seam. During the welded steel tube manufacturing process, the tempering heat treatment should be simulated around the welding line. Both ends of the pipe should be perpendicular to the center line and there should be no blurs on the interior seamed edge or the exterior edge.
  • Production EquipmentThe use of automatic welding equipment ensures continuous production for our welded steel pipes. The laser seam tracking system and the X-ray imaging NDT technique is also used to ensure the proven quality of our spiral pipes, ERW pipes, galvanized steel pipes, and more.
  • Straight Seam Pipe EquipmentAs a pivotal piece of equipment in the ERW steel pipe production line, it is mainly used to cushion and store the steel belts.
    The molding machine is a crucial device in a high frequency welded pipe production line.
  • Spiral Steel Pipe EquipmentOur six spiral welded steel pipe production lines can produce spiral steel pipes made of GR.A,GR.B and X42-X80 steel types with outer diameters ranging from 219.1mm to 3000mm and wall thickness from 5mm to 30mm.
  • Laboratory CenterThe inner organization of the steel can be observed by this machine...
  • Main ProjectsERW Steel Pipe for water transportation and Spiral Steel Pipe for piling use
    Quantity: More than 3000MT
    Standard: GB/T3091 and ASTM A252...
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  • About UsFounded 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.
  • CertificatesWe have passed the ISO9001:2008 international quality management system certification and the GB/T9711.2certification. The straight seam pipes and the spiral welded pipes have captured the CE certification and the API certification from the American Petroleum Institute including API 5L and API 5CT certification.
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