What is the max service temperature of high pressure boiler tube

Feb 28, 2025 Leave a message

What is the maximum service temperature of high pressure boiler tube

 

Commonly used Chinese standard high-pressure boiler steel pipe steel and its maximum permissible temperature, high-pressure boiler tube working conditions are very poor, to be under high pressure and high temperature, in high-speed airflow, water, gas scouring and corrosion can be safe to work for 10 to 20 years, or even longer. High pressure boiler tube of different steel working temperature is also different, in general, the alloy material boiler tube than ordinary material carbon steel boiler tube working temperature is a little higher. The following are commonly used Chinese standard high-pressure boiler tube steel and its parameters.

Steel Grade Pipe calibre Maximum permissible temperature℃ Application
20G 480 Water-cooled walls, economisers
20G 430 Couplings, pipes
20MnG,25MnG, 480 Water-cooled walls, economisers
12CrMoG,15CrMoG 510 Water-cooled walls, economisers
12CrMoG 550 Superheaters, reheaters
15CrMoG 510 Couplings
12Cr2MoG 565 Master tube, coupling box tube
12Cr1MoVG 580 Superheaters, reheaters
12Cr1MoVG 565 Master tube, coupling box tube
12Cr2MoWVTiB 600 Superheaters, reheaters
10Cr5MoWVSiTiB 650 Superheaters, reheaters
10Cr9Mo1VNb 大,小 650 Main vessel tube, coupling box tube, superheater, reheater
1Cr18Ni9 650 Superheaters, reheaters
1Cr18Ni11Nb 650 Superheaters, reheaters

20MnG boiler tube