Global Standards for Boiler Tubes Explained

　　Boiler tubes are mainly used to manufacture superheaters, reheaters, water walls, economizers, etc., for supercritical or ultra-supercritical boilers. The steel tubes are required to have high creep strength, high resistance to oxidation and corrosion, and good structural stability.

　　Main Grades or Steel Grades

　　EN10216-2: P195GH, P235GH, P265GH, 20MnNb6, 16Mo3, 8MoB5-4, 14MoV6-3, 10CrMo5-5, 13CrMo4-5, 10CrMo9-10, 11CrMo9-10, 25CrMo4, 20CrMoV13-5-5, X11CrMo5+1, X11CrMo5+NT1, X11CrMo5+NT2, X11CrMo9-1+1, X11CrMo9-1+NT, X10CrMoVNb9-1, X20CrNiV11-1

　　JIS G3454: STPG 370 (STPG 38), STPG 410 (STPG 42)

　　JIS G3461: STB 35, STB 42, STB 52

　　JIS G3462: STBA12, STBA13, STBA20, STBA22, STBA23, STBA24, STBA25, STBA26

　　Execution Standard

　　Standard: EN10216-2—Alloy and non-alloy steel tubes specifying high-temperature performance

　　JIS G3454: Carbon steel tubes for pressure piping

　　JIS G3461: Carbon steel tubes for boilers and heat exchangers

　　JIS G3462: Alloy steel tubes for boilers and heat exchangers

　　American Standards for Boiler Tubes

　　Standards Implemented:

　　SA-179/SA-179M Seamless cold-drawn low-carbon steel tubes for heat exchangers and condensers

　　SA-192/SA-192M Seamless carbon steel boiler tubes for high-pressure applications

　　SA-209/SA-209M Seamless carbon-molybdenum alloy steel tubes for boilers and superheaters

　　SA-210/SA-210M Seamless medium-carbon steel tubes for boilers and superheaters

　　SA-213/SA-213M Seamless ferritic and austenitic alloy steel tubes for boilers, superheaters and heat exchangers

　　Specifications

　　Outer diameter Φ15.88~89mm, wall thickness 2.6~12.5mm

　　Main Grades or Steel Grades of American Standard High-Pressure Boiler Tubes

　　Commonly Used Grades: SA-179M, SA-192M, SA-209M T1a, SA-210M Gr.C, SA-210M Gr.A1, SA-213M T11, SA-213M T12, SA-213M T22, SA-213M T23, SA-213M T91
        Boiler tubes are frequently subjected to high temperature and high pressure conditions. Under the influence of high-temperature flue gas and steam, the tubes will undergo oxidation and corrosion. Therefore, boiler steel tubes have high creep strength, high resistance to oxidation and corrosion, and good structural stability Email : pipe@stpipefitting.cn