Q: What are the typical applications of 12Cr1MoVG in a power plant boiler?
A: In power plant boilers, 12Cr1MoVG is widely used for manufacturing key components such as superheaters, reheaters, headers, and main steam pipes-1-4.
Q: Where is 15CrMoG commonly applied in the petrochemical sector?
A: In petrochemical facilities, 15CrMoG pipes are often used in cracking furnaces and steam pipelines. It can withstand working temperatures above 450°C and pressures of 9.8 MPa-1.
Q: What are the primary Chinese national standards (GB) governing these pipes?
A: The primary standard for high-pressure boiler tubes is GB/T 5310, which was updated in 2023, replacing the older, repealed standard-1. For general fluid transmission, GB/T 8163 may also be applicable-4.
Q: What are the common manufacturing processes for these seamless steel pipes?
A: They are primarily manufactured through two processes: Hot-rolling (extrusion) and Cold-drawing (rolling)-4.
Q: What non-destructive testing (NDT) methods are typically required for these pipes?
A: Standard NDT methods include eddy current testing and hydrostatic (water) pressure tests to ensure integrity and leak-proof performance-1.
