St37 seamless pipe from Hebei K-steel Pipe Industry Co.,Ltd. is a widely utilized, low-carbon structural steel, often conforming to German standards (DIN 17100, DIN 1629, or DIN 2391). The number "37" indicates a minimum tensile strength of 370 N/mm² (or roughly 360-460 MPa). As a seamless pipe, it is manufactured from solid round steel billets that are heated and formed without any weld joints, ensuring high pressure resistance, excellent structural integrity, and uniform wall thickness.
Key Properties
Composition: Low carbon steel, typically featuring less than 0.17% carbon, along with silicon and manganese, making it highly weldable and ductile.
Strength & Durability: Offers a minimum yield strength of approximately 235 MPa, providing strong, reliable performance for structural and load-bearing applications.
Fabrication: Excellent cold bending, workability, and machining properties due to the lower carbon content.
Finish: Commonly supplied in hot-rolled or cold-drawn finishes, including black or galvanized coatings to improve corrosion resistance.
Common Standards: Often found under DIN 1629 (for seamless tubes of non-alloy steels) and DIN 2391 (for seamless precision steel tubes.
Common Applications
General Engineering: Used in machinery components, structural frameworks, bridges, and construction projects.
Fluid Transmission: Suitable for transporting liquids and gases like oil, gas, and water at lower to medium pressure.
Automotive & Mechanical: Widely used in the manufacturing of hydraulic cylinders, automotive components, and steel furniture
