The large diameter precision seamless steel pipes, the main production process is hot rolling.It divided to large diameter precision seamless steel pipes and thermal expansion diameter precision seamless steel pipe, thermal expansion diameter precision seamless steel pipe specifications range from 325 mm - 1220 mm, the thickest thermal expansion diameter can reach 120mm. The thermal expansion diameter precision seamless steel pipe can produce the national standard size,the density is lower but strong contraction of steel pipe with method of skew rolling or drawing method to expand the pipe diameter of a waste pipe finishing process.To make the steel pipe thicker in a short time , can produce non-standard, special type of seamless pipe, and low cost, high production efficiency, is the current international development trend in the field of pipe rolling.

Jinjiang Changjiang Steel pipe Industry Co., LTD. Specializes in the production and sales of large caliber precision seamless steel pipe, Fujian seamless pipe, Fujian spiral pipe and shelf pipe, welcome to inquire: 86-0595-82151777