As an indispensable and important steel material for the construction of the national economy, seamless steel pipes are widely used in fields such as construction, mechanical processing, and pipeline engineering (transporting fluids and solids such as water, oil, gas, coal, and boiler steam). Due to different usage environments and uses, it is still necessary to choose appropriate materials and standards when selecting to avoid waste and unsafe factors.
20# GB8163 fluid transportation seamless steel pipe
What does seamless steel pipe material mean? The material is what we often call the grade, such as 20#, 45#, which represents its chemical composition and mechanical properties such as tensile strength, yield strength, and expansion rate. The following is the commonly used seamless steel pipe materials, production standards and uses summarized by the author.
1.GB/T8162-2018, Structural seamless steel pipes, mainly used in general structural engineering, mechanical processing, construction and other fields. Representative materials: 20#, 45#, q345b, 40Cr, 42CrMo, etc.;
2.GB/T8163-2018, seamless steel pipe for fluid transportation, mainly used in pipeline projects with low pressure. Representative material: 20#, q345b;
45# GB8162 structural seamless steel pipe
3.GB/T3087-2017, low and medium pressure boiler seamless steel pipes, mainly used to manufacture various structures of superheated steam pipes, boiling water pipes for low and medium pressure boilers, and superheated steam pipes and arch brick pipes for locomotive boilers. Representative materials: 10#, 20#, Q355B;
GB5310 high pressure boiler tube, material 12Cr1MovG
4.GB/T5310-2017, Seamless steel pipes for high-pressure boilers, mainly used to manufacture the heating surfaces of water-tube boilers for high pressures and above. There are carbon steel, alloy steel and stainless heat-resistant steel seamless steel pipes. Representative materials: 20G, 15CrMoG, 12Cr1MoVG, etc.;
5.GB/T6479-2018, high-pressure seamless steel pipes for fertilizer equipment, mainly used for chemical equipment and pipelines with working temperatures of -40~400℃ and working pressures of 10~30Ma. There are carbon structural steel and alloy steel seamless steel pipes. Representative materials: q345a-b-c-d-e, 20#, 10mowvnb, 15CrMo;
6.GB/T9948-2013, seamless steel pipes for petroleum cracking, mainly used for furnace tubes, heat exchangers and pipelines in petroleum refineries. Representative materials: 10#, 20#, Q345, 15CrMo;
Post time: Jan-04-2024
