High Pressure Boiler Tube
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Standard:
China National Standards GB3087.GB5310
American Society of Mechanical Engineers
ASME SA-106.ASME SA-192M.ASME SA-209M.ASME SA-210M.
ASME SA-213M.ASME SA-335M
Deutsche Industrial Normen
DIN17175
Japanese Industrial Standard
JIS G 3461
Application:
Manufacturing water wall panels, economizers, reheaters, superheaters and pipeline of boilers
Pipe wall and OD tolerances as per GB5310
| Pipe category | Pipe sizes(mm) | tolerances | |||
| Standard | Higher | ||||
| Hot rolled | OD | ≤159 | ±1.0%(min±0.5mm) | ±0.75%(min±0.3mm) | |
| >159 | ±1.0% | ±0.90% | |||
| WT | <3.5 | 15%(min 0.48mm -10% -0.32mm) | ±10%(min±0.2mm) | ||
| 3.5~2.0 | 15% -10% | ±10% | |||
| >20 | D<219 | ±10% | ±7.5% | ||
| D<219 | 12.5% -10.0% | ±10% | |||
| Cold drawn | OD | ≤30 | ±0.20mm | ±0.15mm | |
| >30~50 | ±0.30mm | ±0.25mm | |||
| >50 | ±0.8% | ±0.6% | |||
| WT | 2~3 | 12% -10% | ±10% | ||
| >3 | ±10% | ±7.5% | |||
| Pipe category | Pipe sizes(mm) | tolerances | ||
| Standard | Higher | |||
| Hot rolled | OD | ≤159 | ±1.0%(min±0.5mm) | ±0.75%(min±0.4mm) |
| >159 | ±1.0% | ±0.90% | ||
| WT | ≤20 | 15%(min 0.45mm -12.5% -0.35mm) | ±10%(min±0.3mm) | |
| >20 | ±12.5% | ±10% | ||
| Cold drawn | OD | 10~30 | ±0.40mm | ±0.20mm |
| >30~50 | ±0.45mm | ±0.25mm | ||
| >50 | 1.0% | ±0.75% | ||
| WT | 1.5~3.0 | 15% -10% | ±10% | |
| >3.0 | ±12.5% -10% | ±10% | ||
Manufacturing Specification of Seamless Steel Tube for High Pressure Boiler
| No. | Grade | Specification | Executive Standard | ||
| Outer Diameter /mm | Wall Thickness /mm | Economical Length /m | |||
| 1 | 20G , 20MnG , 25MnG , 15MoG , 20MoG | 10 ~ 127 | 1 ~ 20 | 6 ~ 12.0 | GB 5310 |
| 42 ~ 114.3 | 3.5 ~ 12 | 6 ~ 12.2 | |||
| 114.3 ~ 180 | 3.8 ~ 22 | 6 ~ 12.2 | |||
| 68 ~ 254 | 10 ~ 55 | 6 ~ 12.2 | |||
| 140 ~ 368 | 6 ~ 42 | 6 ~ 12.2 | |||
| 318 ~ 720 | 14 ~ 120 | 4 ~ 12.5 | |||
| 2 | 12CrMoG , 15CrMoG , 12Cr2MoG 12Cr1MoVG , 30Cr1MoVG , 12Cr2MoWVTiB , 15NiMnMoNbCu 10Cr9Mo1VNbN | 10 ~ 127 | 1 ~ 20 | 6 ~ 12.0 | GB 5310 |
| 42 ~ 114.3 | 3.5 ~ 12 | 6 ~ 12.2 | |||
| 114.3 ~ 180 | 3.8 ~ 22 | 6 ~ 12.2 | |||
| 68 ~ 254 | 10 ~ 55 | 6 ~ 12.2 | |||
| 140 ~ 368 | 6 ~ 42 | 6 ~ 12.2 | |||
| 318 ~ 720 | 14 ~ 120 | 4 ~ 12.5 | |||
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