The use of seamless steel pipe is very wide, such as natural gas pipeline, oil companies, chemical companies, power pipes, heat pipes, water supply and drainage pipes, steam heating, hydro power station pressure pipe, thermal power, water and other long-distance pipeline and piling, bridges, steel and other engineering fields.
1. GB/T8162-2008 (structural seamless steel pipe with galvanized steel pipe) is mainly used in general structure and mechanical structure. Its representative material (grade) is: carbon steel, 20,45 steel, alloy steel Q345, 20C galvanized steel pipe, 40Cr, 20CrMo, 30-35CrMo, 42CrMo and so on.
2. GB/T8163-2008 (seamless steel pipe for transporting fluid) is mainly used for engineering and large equipment on the delivery of fluid pipelines. On behalf of the ceramic composite pipe material (grade) is 20, Q345 and so on.
3. GB/T3087-2008 (low and medium pressure boiler seamless steel pipe) is mainly used for industrial boilers and live boilers transport low and medium pressure fluid pipe. Representative material is the 10,20 steel.
4. GB/T5310-2008 (seamless steel tube for high pressure boiler) is mainly used for power plants and Tianjin seamless steel pipe boiler on the high temperature, high pressure conveyor belt and pipeline. On behalf of the material for the 20G, 12Cr1MoVG, 15CrMoG steel scaffolding and so on.
5. GB5312-2009 (seamless steel pipe for ship use). On behalf of the material is 360,410,460 steel grade.
6. GB/T6479-2000 (seamless steel pipe for high pressure fertilizer equipment) is mainly used for fertilizer plant on the Tianjin Iron and Steel Group to send high temperature and high pressure fluid pipe. Representative material for the 20,16Mn, 12CrMo, 12Cr2Mo and so on.
7. GB/T9948-2006 (seamless steel pipe for petroleum cracking) is mainly used for oil smelter Boiler, heat exchange scaffolding steel pipe price and its delivery fluid pipeline. Its representative material for the 20,12CrMo, 1Cr5Mo, 1Cr19Ni11Nb and so on.
8. GB/T18248-2000 (seamless steel tube for gas cylinders) is mainly used for the production of various gas welded steel pipe, hydraulic cylinders. Its representative material for the 37Mn, 34Mn2V, 35CrMo and so on.
