The high pressure boiler tubes are mainly applied on the super heaters, reheaters, water walls, economizers of the super critical and ultra super critical boilers. And are required to have high creep rupture strength, high anti-oxidation corrosion resistance, and stable microstructures.
The main code or grade of the ASME high pressure boiler tubes:
Mainly includes: 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
SA-179/SA-179M Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes
SA-192/SA-192M Seamless Carbon Steel Boiler Tubes for High-Pressure Service
SA-209/SA-209M Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes
SA-210/SA-210M Seamless Medium-Carbon Steel Boiler and Superheater Tubes
SA-213/SA-213M Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
The high pressure boiler tubes are often working in the condition with high pressure, high temperature and the interaction of the high temperature flue gas and vapor, which may lead to oxidation and corrosion on the tubes. So, the high pressure boiler tubes are required to have high creep rupture properties, high anti-oxidation corrosion and stable microstructure.