High-quality carbon structural steel, alloy structural steel, and stainless heat-resistant steel seamless steel pipe for high-pressure and above steam boiler pipes in GB/T5310-2007 standard. Material mainly is Cr-Mo alloy and Mn Alloy, Such as 20G, 20MnG, 20MoG, 12CrMoG, etc.
High pressure boiler tube is a kind of boiler tube, belongs to the seamless steel tube category. The manufacturing method is the same as seamless pipe, but there are strict requirements on the type of steel used to manufacture steel pipe. High-pressure boiler pipe is often used in high temperature and high pressure conditions, the pipe in high temperature flue gas and water vapor, oxidation and corrosion. The steel pipe is required to have high durable strength, high oxidation corrosion resistance and good microstructure stability. High pressure boiler tube is mainly used to manufacture superheater tube, reheater tube, conduit pipe, main steam pipe and so on of high pressure and ultra high pressure boiler.
Low and medium pressure boiler tube GB3087-2008, high pressure boiler tube GB5310-2008 is used to manufacture all kinds of structure low pressure boiler superheated steam tube, boiling water tube and locomotive boiler with superheated steam tube, big smoke tube, small smoke tube and arch brick pipe pipe high quality carbon structural steel hot rolled and cold drawn (rolled) seamless steel tube. Seamless steel pipe for structure (GB/T8162-2008) is used for general structure and mechanical structure of seamless steel pipe.
Specifications and appearance quality: GB5310-2008 “Seamless steel tube for high pressure boiler” hot rolled pipe diameter 48mm ~ 530mm, wall thickness 3mm ~ 70mm. The outer diameter of cold-drawn (cold-rolled) tube is 6mm ~ 108mm, and the wall thickness is 1.0mm ~ 13.0mm.