What’s the difference between B class and C class pipe？

In the steel pipe industry, B Class and C Class steel pipes typically refer to the classification based on chemical composition and mechanical properties. The differences in chemical composition are mainly in the content of carbon (C), silicon (Si), manganese (Mn), sulfur (S), and phosphorus (P). These differences in chemical composition can affect the mechanical properties of steel pipes, such as yield strength, tensile strength, and elongation.

Mechanical property indicators for Class B steel pipes: Tensile strength ≥ 415 MPa, Yield strength ≥ 240 MPa, Elongation ≥ 20%.
Application fields: steel pipes used in medium-stress environments, such as bridges, road and tunnel parts, etc.

Mechanical property indicators for Class C steel pipes: Tensile strength ≥ 485 MPa, Yield strength ≥ 275 MPa, Elongation ≥ 20%.
Application fields: steel pipes used in high-stress environments, such as pressure vessels, ships, etc.

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