Sep 21, 2020 · ①Generally, the temperature of boiler tubes is below 350℃. Domestic tubes are mainly made of No. 10 and No. 20 carbon steel hot-rolled tubes or cold-drawn tubes. ②High-pressure boiler tubes are often in high temperature and high pressure conditions when they are used.
Low, Medium and High Pressure Boiler Tube - Permanent Steel
20G is widely used in boiler economizers, superheaters, convection tubes, water walls and various headers. 20G has good bending and welding performance, so it is widely used in the manufacture of heating surfaces in boilers whose wall temperature is lower than 480℃ tube
Jul 08, 2018 · 20G boiler steel tube is included in GB5310 steel grade (foreign corresponding brand: Germany ST45.8, Japan STB42, the United States SA106B), as the most common boiler steel pipe, it has the same chemical composition and mechanical properties with 20G steel plate. The steel has a certain temperature and high temperature strength, low carbon
Grade 20G Seamless Steel Boiler Pipe is applicable to seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes used as pipelines. 20G seamless steel pipe is a high-quality carbon structural steel, boiler material, the carbon content of 0.17-0.24%, tensile strength of 410Mpa, yield point 230-250Mpa.
Grade 20G Seamless Steel Boiler tube is applicable to seamless tubes for making steam boiler whose pressure is high or higher and seamless tubes used as tubelines. 20G seamless steel tube is a high-quality carbon structural steel boiler material the carbon content of 0.17-0.24% tensile strength of 410Mpa yield point 230-250Mpa.
Steel Boiler Tube. Medium temperature 450 ℃ or less pipeline fittings, etc. As carbon steel will produce graphitization during the long running above 450 ℃, long-term highest use temperature limit of the heating surface pipe is best under 450 ℃.