The main characteristic of seamless steel pipe is no welding seam, can withstand greater pressure. Products can be very rough cast. It is a kind of long bar of steel with hollow cross-section, no around seams. A large number of steel pipe is used for transporting fluid, such as the transportation of oil, gas, gas, water and some solid materials. Compared to round bar and other solid steel, in the case of same torsional bending strength, seamless steel pipe is lighter, is an economic cross-section steel, widely used in the manufacture of structural parts and mechanical parts, such as drill pipe, automotive drive shafts, bicycle frames and other construction.
Precision steel pipes products emerged in recent years, mainly in the hole, bore, outer dimensions have tight tolerances and roughness. Precision steel pipe is a kind of steel material with high-precision cold drawn or hot rolled processing.