1. Different execution standards of these
boiler steel pipes:
High-pressure boiler steel pipe standard: GB/T5310-2018
Low/medium-pressure boiler steel pipe standard: GB/T3087-2018
2. Different operating environments of these boiler steel pipes:
High-pressure boiler steel pipes: generally operating pressure above 9.8 MPa, operating temperature between 450℃ and 650℃
Low/medium-pressure boiler steel pipes: generally operating pressure not exceeding 5.88 MPa, operating temperature below 450℃
3. Different materials of these boiler steel pipes:
Suitable materials for high-pressure boiler steel pipes: 20G, 20MnG, 25MnG, 15MoG, 20MoG, 12CrMoG, 15CrMoG, 12Cr2MoG, 12CrMoVG, 12Cr3MoVSiTiB, etc.
Suitable materials for low/medium-pressure boiler steel pipes: 10#, 20#
4. The prices of the two types of boiler steel pipes are different.
The price of high-pressure boiler steel pipes is higher than that of low and medium-pressure boiler steel pipes.
