GB 5310 15CrMoG Seamless Boiler Tubes
15CrMoG seamless steel pipe is a type of boiler pipe and belongs to the seamless steel pipe category. Its delivery status is normalized + tempered; the manufacturing method is the same as that of seamless pipes, but there are strict requirements for the type of steel used in manufacturing steel pipes. High-pressure boiler tubes are often exposed to high temperature and high pressure conditions during use. Under the action of high-temperature flue gas and water vapor, the tubes will oxidize and corrode. Steel pipes are required to have high lasting strength, high resistance to oxidation and corrosion, and good structural stability.
15CrMoG high-pressure boiler tubes are mainly used to manufacture superheater tubes, reheater tubes, air guide tubes, main steam tubes, etc. for high-pressure and ultra-high-pressure boilers.
Chemical composition of GB 5310 15CrMoG pipe
| Steel Pipe | Chemical Composition(%) | ||||||||
| C | Si | Mn | Cr | Mo | Ni | Cu | P | S | |
| Max | |||||||||
| 15CrMoG | 0.12～0.18 | 0.17～0.37 | 0.40～0.70 | 0.80～1.10 | 0.40～0.55 | ≤0.30 | ≤0.20 | 0.025 | 0.020 |
| Tensile properties | Impact energy(Akv),J | Hardness | |||||||
| Tensile strength (MPa) |
Yield Strength (MPa) |
Elongation % |
Portrait | Landscape | A | B | C | ||
| HBW | HV | HRC | |||||||
| Portrait | Landscape | ||||||||
| Max | Min | ||||||||
| 440～640 | 235 | 21 | 19 | 40 | 27 | 170 | 180 | 88HRB | |
GB5310 15CrMoG boiler steel pipe
Manufacture:Seamless process ,Hot-finished or Cold-finished
Wall thickness(WT): 2.8 mm--150 mm.
Outer diameter (OD): 23 mm--1500 mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Treaded
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