Seamless steel tubes are widely used.

1. General-purpose seamless steel pipes are rolled from ordinary carbon structural steel, low-alloy structural steel, or alloy structural steel, with the highest production volume. They are primarily used as pipelines for conveying fluids or structural components.

2. Offer three categories of supply based on different applications:

Available by chemical composition and mechanical properties.

b. Supplied based on mechanical properties.

c. Supplied with hydrostatic testing. Pipes supplied as types A and B, if used to withstand liquid pressure, must also undergo hydrostatic testing.