Engineering order replenishment, product alloy steel pipe A333 GR6, specification is 168.3*7.11, and carbon steel pipe GB/T9948, 20#, specification is 114.3*6.02, etc.

The following introduces the standards and materials that engineering orders will encounter:

20# GB8163 fluid transportation seamless steel pipe

What does seamless steel pipe material mean? The material is also the grade we often say, such as 20#, 45#, which represent its chemical composition and mechanical properties such as tensile strength, yield strength, and expansion rate. The following are 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 for pipeline engineering 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 for the heating surface of water tube boilers with high pressure and above. There are carbon steel, alloy steel and stainless steel heat-resistant seamless steel pipes. Representative materials: 20G, 15CrMoG, 12Cr1MoVG, etc.;

5. GB/T6479-2018, high-pressure seamless steel pipes for chemical fertilizer equipment, mainly used for chemical equipment and pipelines with a working temperature of -40~400°C and a working pressure of 10~30Ma. There are carbon structural steel and alloy steel seamless steel pipes. Representative material: 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 material: 10#, 20#, Q345, 15CrMo;