High Pressure Boiler Tube
For the manufacture of boiler water-cooled walls, coal savers, reheaters, superheaters and steam pipes
Product description
● Standard
Chinese National Standard | GB5310-2008 |
American Society of Mechanical Engineers Standard | ASME SA-106 ASME SA -192MASME SA -209M |
German Industrial Standard | DIN17175 |
Japanese Industrial Standard | JIS G3462 |
● Uses
For the manufacture of boiler water-cooled walls, coal savers, reheaters, superheaters and steam pipes
● Size deviation
Deviation of wall thickness and outside diameter of tubes supplied according to GB5310
Steel Tube Types | Tube size mm | Allowable Deviation | |||
Common Grade | High Grade | ||||
Hot rolled tube | Outer diameter D | ≤ 159 | ± 1.0% (minimum value is ± 0.5mm) | ± 0.75% (minimum value is ± 0.3mm) | |
＞ 159 | ± 1.0% | ± 0.90% | |||
Wall thickness S | ＜ 3.5 | + 15% (minimum value is + 0.48mm-10%-0.32mm) | ± 10% (minimum value 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 outside diameter deviations of tubes supplied according to GB5310
Steel Tube Types | Tube size mm | Allowable Deviation | ||
Common Grade | High Grade | |||
Hot rolled tube | Outer diameter D | ≤ 159 | ±1.0%( The smallest± 0.50mm ) | ±0.75%( The smallest± 0.40mm ) |
＞ 159 | ±1.0% | ±0.90% | ||
Wall thickness s | ≤ 20 | +15.0%( The smallest + 0.45mm )－ 12.5% － 0.35mm ) | ±10%( The smallest± 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 s | 1.5 ~ 3.0 | +15%－ 10% | ±10% | |
＞ 3.0 | +12.5%－ 10% | ±10% | ||
Deviation of wall thickness and outside diameter of tubes supplied according to other standards
Item | Standard | Range | Allowable deviation | |||
Outer diameter | DIN17175 | Hot pipe | D ≤ 100mm | ± 0.75%( Minimum ± 0.5mm) | ||
D ＞ 100~ 320mm | ± 0.9% | |||||
Cold tube D ≤ 120mm | ± 0.6%(Minimum ± 0.25mm) | |||||
ASME SA -192M 、 ASME SA -209M 、 ASME SA -210M 、 ASME SA -213M 、 ASME SA -335M 、 JIS G 3461 | Hot 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 | Hot 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 the standard wall thickness