Manufacturing Process of Seamless Steel Tubes Used for Large-Caliber Thin-Wall Gas Cylinders

In order to make up to the hot rolling and cold rolling process for the lack of processing capacity or high cost of seamless steel tubes for large-caliber thin-wall gas cylinders, the technology of thermal expansion and cold drawing was developed and improved to manufacture the seamless steel tubes. The test results prove that:the cylinder steel tubes manufactured by this technology could meet the requirements of GB 28884-2012, and also meet the agreement requirements of customers in performance, dimension and so on, and they could make up for the lack of such gas steel tubes in the market.