1. Small diameter seamless steel pipe for structural use (GB/T8162-2008) is a seamless steel pipe used for general structure and mechanical structure.

2. Large diameter seamless steel pipe for fluid transport (GB/T8163-2008) is a general seamless steel pipe used for transporting water, oil, gas and other fluids.

3. Seamless steel pipe for low and medium pressure boiler (GB3087-1999) is used to manufacture various structures of low and medium pressure boiler superheat, sanitary stainless steel pipe. Steam pipe, boiling water pipe and locomotive boilers with superheated steam pipe and arch brick pipe with high quality carbon structural steel hot-rolled and cold-drawn (rolled) seamless steel pipe.

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

5. High-pressure seamless steel pipe for chemical fertiliser equipment (GB6479-2000) is a high-quality carbon structural steel and alloy steel seamless pipe for chemical equipment and pipelines with working temperature of -40~400℃ and working pressure of 10~30Ma.

6. Seamless steel pipe for petroleum cracking (GB9948-88) is seamless steel pipe for furnace pipe, heat exchanger and pipeline of petroleum refinery.