What are the hot rolling process steps of high pressure seamless tube

High pressure seamless tube is also called high pressure boiler tube, also known as boiler tube.

Hot rolling process steps of high pressure seamless tube: heating the round tube billet to a certain temperature, and then performing piercing treatment, the next step is the three-roll cross rolling, continuous rolling or extrusion process, followed by stripping. The tube is sizing, then cooled to form a blank tube, straightened, and finally after a hydraulic test, mark it and store it.

High pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, air ducts and main steam tubes of high-pressure and ultra-high-pressure boilers. The main materials are: 20G, 20MnG, 25MnG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG, 12Cr2MoWVTiB, 10Cr9Mo1VNb, SA210A1, SA210C, SA213 T11, SA213 T12, SA213 T22, SA213 T23, SA213 T91, SA213 T92, ST45.8/Ⅲ, 15Mo3, 13CrMo44, 10CrMo910, etc.