Hot Rolled Steel Pipe Seamless Pipe For Construction

Seamless steel pipes have a wide range of uses.

1. General-purpose seamless steel pipes are rolled from ordinary carbon structural steel, low-alloy structural steel or alloy structural steel, with the largest output, and are mainly used as pipes or structural parts for conveying fluids.

2. They are supplied in three categories according to different uses:

a. Supply according to chemical composition and mechanical properties;

b. Supply according to mechanical properties;

c. Supply according to water pressure test. Steel pipes supplied in categories a and b, if used to withstand liquid pressure, must also be subjected to water pressure tests.

3. Special-purpose seamless pipes include seamless pipes for boilers, chemical power, geological seamless steel pipes, and seamless pipes for petroleum.

Seamless steel pipes have hollow cross-sections and are widely used as pipelines for conveying fluids, such as pipelines for conveying oil, natural gas, coal gas, water, and certain solid materials. Compared with solid steels such as round steel, steel pipes are lighter in weight when the bending and torsional strengths are the same, and are an economical cross-section steel.

It is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile drive shafts, bicycle frames, and steel scaffolding used in construction. The use of steel pipes to manufacture annular parts can improve material utilization, simplify the manufacturing process, save materials and processing time, and has been widely used in steel pipe manufacturing.