● Standard
| China National Standard | GB5310-2017 |
| ASME Standards |
ASME SA-106 ASME SA-192MASME SA-209M ASME SA-210M ASME SA-213MASME SA-335M |
| German Industrial Standard | DIN17175 |
| Japanese Industrial Standard | JIS G3462 |
● Uses
Used in the manufacture of boiler water walls, economizers, reheaters, superheaters and steam pipes
● Deviation
Wall thickness and outer diameter deviation of steel pipes supplied according to GB5310 standard
| Type of steel pipe | Steel pipe size mm | Allowable deviation | |||
| Normal | Advanced | ||||
| Hot rolled tube | outer diameter D | ≤ 159 | ± 1.0% (minimum is ± 0.5mm) | ± 0.75% (minimum is ± 0.3mm) | |
| > 159 | ± 1.0% | ± 0.90% | |||
| Wall Thickness S | < 3.5 | + 15% (+ 0.48mm - 10% - 0.32mm minimum) | ± 10% (minimum is ± 0.2mm) | ||
| 3.5~20 | +15%-10% | ±10% | |||
| > 20 | D < 219 | ± 10% | ±7.5% | ||
| D ≥ 219 | +12.5%-10.0% | ±10% | |||
| Cold drawn tube | Outer diameter D | ≤ 30 | ± 0.20mm | ± 0.15mm | |
| > 30~50 | ± 0.30mm | ± 0.25mm | |||
| > 50 | ±0.8% | ±0.6% | |||
| Wall Thickness S | 2~3 | +12%-10% | ±10% | ||
| > 3 | ±10% | ±7.5% | |||
Wall thickness and outer diameter deviation of steel pipes supplied according to GB5310 standard
| Type of steel pipe | Steel pipe size mm | Allowable deviation | ||
| Normal | Advanced | |||
| Hot rolled tube | outer diameter D | ≤ 159 | ±1.0%(minimum ± 0.50mm) | ±0.75% (minimum ± 0.40mm) |
| ＞ 159 | ±1.0% | ±0.90% | ||
| wall thickness | ≤ 20 | +15.0% (minimum + 0.45mm ) - 12.5% - 0.35mm ) | ±10% (minimum ± 0.30mm) | |
| ＞ 20 | ±12.5% | ±10% | ||
| Cold drawn tube | outer diameter D | 10 ~ 30 | ± 0.40mm | ± 0.20mm |
| ＞ 30 ~ 50 | ± 0.45mm | ± 0.25mm | ||
| ＞ 50 | +1.0% | ±0.75% | ||
| wall thickness | 1.5 ~ 3.0 | +15%－ 10% | ±10% | |
| ＞ 3.0 | +12.5%－ 10% | ±10% | ||
Wall thickness and outer diameter deviation of steel pipes supplied according to other standards
| Project | Standard | Scope | Allowable deviation | ||||
| 外径 | DIN17175 | Heat pipe | D ≤ 100mm | ± 0.75% (min ± 0.5mm) | |||
| D ＞ 100~ 320mm | ± 0.9% | ||||||
| Cold tube： D ≤ 120mm | ± 0.6% (min ± 0.25mm) | ||||||
| ASME SA -192M 、 ASME SA -209M 、 ASME SA -210M 、 ASME SA -213M 、 ASME SA -335M 、 JIS G 3461 | Heat pipe | D ＜ 100mm | +0.4~ -0.8mm | ||||
| D ≥ 100~ ＜ 160mm | +0.4~ -1.2mm | ||||||
| D ≥ 160~ ＜ 200mm | +0.4~ -1.8mm | ||||||
| D ≥ 200 mm | +0.4~ -2.4mm | ||||||
| Cold tube | D ＜ 25mm | ± 0.10 mm | |||||
| D ≥ 25~ ＜ 40mm | ± 0.15 mm | ||||||
| D ≥ 40~ ＜ 50mm | ± 0.20 mm | ||||||
| D ≥ 50~ ＜ 60mm | ± 0.25 mm | ||||||
| D ≥ 60 ~ ＜ 80mm | ± 0.30 mm | ||||||
| ASME SA-106 | D 10.3~ 48.3mm | ± 0.40 mm | |||||
| D ＞ 48.3~ 114.3mm | ± 0.79 mm | ||||||
| D ＞ 114.3~ 219.1mm | +1.59~ -0.79mm | ||||||
| D ＞ 219.1~ 457mm | +2.38~ -0.79mm | ||||||
| wall thickness | DIN17175 | D ≤ 130mm | S ≤ 2Sn | +15%~-10% | |||
| S ＞ 2Sn~4Sn | +12.5%~-10% | ||||||
| S ＞ 4Sn | ± 9% | ||||||
| 130 ＜ D ≤ 320mm | S ≤ 0.05D | +17.5%~-12.5% | |||||
| 0.05D ＜ S ≤ 0.11D | ± 12.5% | ||||||
| S ＞ 0.11D | ± 10% | ||||||
| ASME SA -192M 、 ASME SA -209M 、 ASME SA -210M 、 ASME SA -213M 、 ASME SA -335M 、 JIS G 3461 | Heat pipe | S ≥ 2~ ＜ 2.4mm ，且 D ＜ 100 | +40~0% | ||||
| S ≥ 2.4~ ＜ 3.8mm | +35~0% | ||||||
| S ≥ 3.8~ ＜ 4.6mm | +33~0% | ||||||
| S ≥ 4.6mm | +28~0% | ||||||
| Cold tube | D ＜ 40 | S ＜ 2mm | +0.4~ 0mm | ||||
| S ≥ 2mm | +20~0% | ||||||
| D ≥ 40 | +22~0% | ||||||
| ASME SA-106 | -12.5% | ||||||
Note: Sn is standard wall thickness
