Structural Pipe Seamless Structural Carbon Steel Pipe

Short Description:

Structural steel pipes are divided into carbon structural steel pipes and low-alloy high-strength structural steel pipes.Carbon structural steel pipes are mainly used in plants, bridges, ships and other buildings and pipes for general transportation of fluids.This kind of steel is generally used directly without heat treatment.Low alloy high strength structural steel pipes are widely used in ships, bridges, boilers, vehicles and important buildings due to their high strength and comprehensive mechanical properties.

Product Detail

Product Tags

Product specifications

Out Diameter


Wall Thickness




OD Tolerance

+/- 0.5%

WT Tolerance

+/- 10.00%

Standard Structural Steel Pipes & Tubes Specifications & Grades

GB/T 8162  Grades 10,20,35,45,Q355A,Q355B,Q355C,Q355D,Q355E;
DIN 1629   Grades St37.0, St44.0,St55 St52, Ck45;
ASTM A53/ASME SA53    Grades A & B;
ASTM A519/ASME SA519  Grades 1020,1026,4130,4135;
ASTM A500/ASME SA500  Grades A, B, C, D,E;
EN10210-1  Grade S235JRH, S275JOH, S275J2H, S355JOH, S355J2H, S355K2H;

GB/T 8162

Standard Specification for pipelines, vessels and steel structures.

DIN 1629

Standard Specification used for circular unalloyed steel tubes subject to special requirements


Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless.


Standard Specification used for machine, automobile, and other mechanical accessory purposes.


Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes


Standard for hot finished structural hollow section of non-alloy and fine grain steels


Used in the general structure and the mechanism, including construction, machinery, transportation, aviation, petroleum mining and each kind of structural tubes


In structural engineering, the tube is the system where in order to resist lateral loads (wind, seismic, etc.) a building is designed to act like a hollow cylinder, cantilevered perpendicular to the ground. 

The system can be constructed using steel, concrete, or composite construction (the discrete use of both steel and concrete). It can be used for office, apartment and mixed-use buildings. Most buildings in excess of 40 stories constructed since the 1960s are of this structural type.

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China Professional Steel Tube Supplier

     Our factory has more than 30 years of production and export experience, exporting to more than 50 countries and regions, such as the United States, Canada, Brazil, Chile, the Netherlands, Tunisia, Kenya, Turkey, the United Arab Emirates, Vietnam and other countries. With a fixed production capacity value every month, it can meet the large-scale production orders of customersNow there are hundreds of customers with fixed large-scale annual orders. If you want to buy low carbon steel pipe, high carbon steel tube ,rectangular pipe, carton steel rectangular pipe,square tube, alloy steel pipe, seamless steel pipe, carbon steel seamless tube,steel coils, steel sheets ,precision steel tube,and other steel products, contact us to provide you with The most professional service, save your time and cost !

    Our factory also sincerely invites regional agents in various countries. There are more than 60 exclusive steel plate, steel coil and steel pipe agents. If you are a foreign trading company and are looking for the top suppliers of steel plates, steel pipes and steel coils in China, please contact us. To provide you with the most professional and high-quality products in China to make your business better and better !

   Our factory has the most complete steel product production line and the strictest product testing process to ensure a 100% product pass rate; the most complete logistics delivery system, with its own freight forwarder, saves you more transportation costs and guarantees 100% of the goods. perfect packaging and arrival. If you are looking for the best quality steel sheet, steel coil, steel pipe manufacturer in China, and want to save more logistics freight, please contact us, our professional multilingual sales team and logistics transportation team will provide you with the best Steel product service to ensure you receive a 100% quality guaranteed product !

   Get the best quotation for steel tubes: you can send us your specific requirements and our multilingual sales team will provide you with the best quotation!  Let our cooperation start from this order and make your business more prosperous !

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