15CrMoG steel pipe manufacturer ,15CrMoG steel pipe supplier,15CrMoG steel pipe exporter in China.
The range of 15CrMoG pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice
15CrMoG steel under GB 5310 standard is seamless steel pipe and tube for high pressure boilers, steam boilers, and pipe lines.
15CrMoG seamless tubes for high pressure boiler
For high-pressure boiler (working pressure 9.8MPa or more generally, the working temperature between 450ºC-650ºC) of heating surface tubes, header, economizer, superheater, reheater and so on.
15CrMoG Seamless Tubes for High Pressure Boiler description
Standard: GB 5310
Relative grades:20G, 20MnG, 15MoG, 15CrMoG, 12Cr2MoG, 12Cr1MoVG. After consultation, can also supply other grades of steel.
Mechanical properties:
| Grade | Tensile strength(MPa) | Yield strength(MPa) | Elongation(%) | |
| Vertical | Longitudinal | |||
| 15CrMoG | 440-640 | 295 min. | 21 min. | 19 min. |
Chemical composition:
| C | Si | Mn | P | S | Cr | Mo |
| 0.12-0.18 | 0.17-0.37 | 0.40-0.70 | 0.025 max. | 0.015 max. | 0.80-1.10 | 0.40-0.55 |
15CrMoG seamless tubes heat treatment: Normalizing and tempering
- Normalizing temperature: 900 °C-960 °C
- Tempering temperature: 680 °C-730 °C
Application: For high-pressure boiler (working pressure 9.8MPa or more generally, the working temperature between 450ºC-650ºC) of heating surface tubes, header, economizer, superheater, reheater and so on.
The W.T. tolerance of 15CrMoG:
| W.T.(S) | Tolerance of W.T. | |
| <3.5 | +15%(+0.48mm min) | |
| -10%(+0.32mm min) | ||
| 3.5-20 | +15%,-10% | |
| >20 | D<219 | ±10% |
| D≥219 | +12.5%,-10% | |
KINGMETAL STEEL INDUSTRY CO.,LTD ,is a professional company in manufacturing and saling steel pipes and pipe fittings ( tee, elbow ,reducer ,flanges). we are an old company in this area ,we start from 1989 and have rich exporting experience .
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