1. The structure of stainless steel seamless pipe (GB/T8162-1999) is used for general structural and mechanical structure of the seamless steel tubes.

2. Fluid transport stainless steel seamless pipe (GB/T8163-1999) is used for conveying water, oil, gas and other fluids generally seamless.

3. Low and medium pressure boiler steel seamless pipe (GB3087-1999) is used to manufacture various structural low and medium pressure boiler superheated steam pipes, boiling water pipes and superheated steam locomotive boiler pipes, opium pipe, small pipe and arch brick works of quality carbon structural steel hot-rolled and cold drawn (rolled) seamless steel tubes.

4. High-pressure boiler seamless pipe (GB5310-1995) and above are used to manufacture high pressure water tube boiler heating surface with high-quality carbon steel, alloy steel and heat-resistant stainless steel seamless pipes.