Seamless Steel Pipe

Seamless steel pipe is a steel pipe made by perforating a solid round bar, with no weld seams on its surface. Based on the production method, seamless steel pipe can be categorized as hot-rolled seamless steel pipe, cold-rolled seamless steel pipe, cold-drawn seamless steel pipe, extruded seamless steel pipe, and jacking pipe. Based on cross-sectional shape, seamless steel pipe is categorized as round or special-shaped. Special-shaped pipes include square, oval, triangular, hexagonal, melon-seed, star-shaped, and finned pipes. The maximum diameter is 900mm, and the minimum is 4mm. Depending on the application, thick-walled and thin-walled seamless steel pipes are available. Seamless steel pipe is primarily used as oil and geological drilling pipe, cracking pipes for the petrochemical industry, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.