Seamless steel pipe for boilers is a type of boiler pipe and belongs to the category of seamless steel pipes. The manufacturing method is the same as that of seamless steel pipes, but there are strict requirements for the type of steel used in manufacturing steel pipes. Seamless steel pipes for boilers are often used under high temperature and high pressure conditions. Under the action of high temperature flue gas and water vapor, the pipes will oxidize and corrode. Steel pipes are required to have high lasting strength, high resistance to oxidation and corrosion, and good structural stability. Seamless steel pipes for boilers are mainly used to make high-pressure pipes, main steam pipes, etc.

Low and medium pressure boiler tubes GB3087 and boiler seamless tubes GB5310 are high-quality materials used to manufacture superheated steam pipes, boiling water pipes for low-pressure boilers of various structures, superheated steam pipes for locomotive boilers, large smoke pipes, small smoke pipes and arch brick pipes. Carbon structural steel hot-rolled and cold-drawn (rolled) seamless steel pipes. Structural seamless steel pipe (GB/T8162) is a seamless steel pipe used for general structures and mechanical structures. High-pressure boiler pipes ASME SA-106 (GR.B, GR.C) and ASTM A210 are used for boiler pipes and boiler flues. Tubes, including safety end vault and strut tubes and smaller wall thickness seamless medium carbon steel tubes for superheater tubes, ASME SA-213, seamless ferritic and austenitic for boilers, superheaters and heat exchangers Alloy steel pipe, ASTM A335 P5, P9, P11, P12, P22, P9, P91, P92, ferritic alloy seamless steel pipe for high temperature.

Specifications and appearance quality: GB5310-2017 "Seamless Steel Pipe for High-Pressure Boilers" The outer diameter of hot-rolled pipes is 22 to 530mm, and the wall thickness ranges from 20 to 70mm. The outer diameter of cold-drawn (cold-rolled) pipes ranges from 10 to 108mm, and the wall thickness ranges from 2.0 to 13.0mm.

Seamless tubes for boilers adopt steel grades

(1) High-quality carbon structural steel grades include 20G, 20MnG, and 25MnG.

(2) Alloy structural steel steel grades 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, etc.