Seamless steel pipe, which uses a number of different species are divided into the following:

    GB/T8162-1999 (seamless steel pipe structure). Mainly used in the general structure and mechanical structure. His representative material (grade): carbon steel steel 20,45; steel Q345, 20Cr, 40Cr, 20CrMo ,30-35CrMo, 42CrMo such.

    GB/T8163-1999 (transmission fluid with seamless steel tubes). Mainly used in engineering and large-scale equipment on the transmission fluid pipeline. On behalf of Materials (Grade) as 20, Q345 and so on.

    GB3087-1999 (Low and Medium Pressure Boiler Seamless Steel Tube). Mainly used in industrial boilers and boiler life in low-pressure fluid delivery pipeline. 10,20 representative of material for steel.

    GB5310-1995 (High Pressure Boiler Seamless Steel Tube). Mainly used in power stations and nuclear power plant boiler high temperature, high pressure fluid transmission and header pipes. Representative of material for the 20G, 12Cr1MoVG, 15CrMoG and so on.

     GB5312-1999 (the ship and carbon manganese steel with carbon steel seamless steel tubes). Mainly used in ship boilers and overheating transparencies I, II, etc. Pressure class. Representative of material for the steel grade, such as 360,410,460.

    GB1479-2000 (high-pressure chemical fertilizer equipment, with seamless steel tubes). Mainly used in chemical fertilizer plants on high temperature and high pressure fluid delivery pipeline. Representative of material for the 20,16 Mn, 12CrMo, 12Cr2Mo such.

    GB9948-1988 (seamless steel pipes oil cracking). Mainly used in petroleum refinery boilers, heat exchangers and pipes conveying fluid. Material for their representatives 20,12 CrMo, 1Cr5Mo, 1Cr19Ni11Nb and so on.

    GB18248-2000 (cylinders with seamless steel tubes). Mainly used in the production of gas, hydraulic cylinders. His representative for the material 37Mn, 34Mn2V, 35CrMo such.

    GB/T17396-1998 (hot-rolled seamless steel pipe with hydraulic prop). The main support for the production of coal and hydraulic cylinders, columns, and other hydraulic cylinders and columns. Their representatives and other materials for the 20,45,27 SiMn. 

GB3093-1986 (diesel engine with high pressure seamless steel tubes). The main high-pressure injection system for diesel engine oil. Its generally cold-drawing steel tubes, his representative for the material 20A.

    GB/T3639-1983 (Cold-drawn or cold-rolled precision seamless steel tube). Mainly used for mechanical structure, carbon pressure equipment requiring high dimensional accuracy, good surface finish steel. On behalf of steel material 20,45.

    GB/T3094-1986 (cold drawn shaped seamless steel pipe steel pipe). Mainly used in the production of structural parts and components, the material for high-quality carbon structural steel and low alloy structural steel.

    GB/T8713-1988 (hydraulic and pneumatic cylinder diameter seamless steel tubes with precision). Mainly used in the production of hydraulic and pneumatic cylinder with precision internal diameter with the size of cold-drawing or cold-rolled seamless steel pipe. 20,45 representative material for steel.

    GB13296-1991 (boiler, heat exchanger with stainless steel seamless steel tubes). Mainly used in chemical industry, boiler, superheater, heat exchangers, condensers, catalytic tubes. Used in high temperature, high pressure, corrosion-resistant steel. His representative material for 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.

    GB/T14975-1994 (structure stainless steel seamless pipe). Mainly used for general structures (hotels, restaurants decoration) and the chemical industry, the mechanical structure of the resistance with the atmosphere, and acid corrosion of the steel pipe has a certain intensity. His representative material for the 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and so on.

    GB/T14976-1994 (fluid seamless steel pipe stainless steel). The main medium for the transmission pipeline corrosion. Representative of material for 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti and so on.

    YB/T5035-1993 (automobile axle casing seamless steel pipes). Mainly used in the production of automobile axle casing and drive shaft Bridge shell effective quality carbon structural steel and alloy steel hot-rolled seamless steel tube structure. Material for their representatives 45,45 Mn2, 40Cr, 20CrNi3A and so on.