Carbon steel pipe is a steel pipe produced from carbon steel, which is made of steel ingot or solid round steel through perforation, and then made by hot rolling, cold rolling or cold drawing. The carbon content is about 0.05% to 1.35%. Carbon steel pipes are mainly divided into: seamless steel pipes for structural use, seamless steel pipes for conveying fluids, seamless steel pipes for low and medium pressure boilers, seamless steel pipes for high pressure boilers, seamless steel pipes for petroleum cracking