Seamless carbon steel pipe (Seamless carbonsteel pipe) is made of a steel ingot or a solid tube blank through perforation to make a capillary tube, and then made by hot rolling, cold rolling or cold drawing. Seamless carbon steel pipe plays an important role in my country’s steel pipe industry. According to incomplete statistics, there are more than 240 seamless carbon steel pipe production enterprises in my country, more than 250 seamless carbon steel pipe units, and an annual production capacity of about 4.5 million tons. From the perspective of caliber, <φ76 accounts for 35%, and <φ159-650 accounts for 25%. In terms of varieties, general-purpose pipes are 1.9 million tons, accounting for 54%; petroleum pipes are 760,000 tons, accounting for 5.7%; hydraulic props and precision pipes are 150,000 tons, accounting for 4.3%; stainless steel pipes, bearing pipes, and automotive pipes total 50,000 tons tons, accounting for 1.4%.