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High Pressure Boiler Tube

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Size: O.D.:14 - 426mm thickness: 2 - 61.2mm
Standard: GB3087 、 GB5310、ASME SA-106 、 ASME SA -192M 、 ASME SA -209M 、 ASME SA -210M 、ASME SA -213M 、 ASME SA -335M、DIN17175、JIS G 3461
Application:For the manufacturing of the boiler, economizer, reheater, superheater and steam pipe
 
Size deviation
Allowable deviation(according to GB5310)
 
Steel grade
Size
mm
Allowable deviation
Common grade
High grade
Hot-rolled pipe
D
≤ 159
± 1.0% (minimum± 0.5mm )
± 0.75% (minimum± 0.3mm )
> 159
± 1.0%
± 0.90%
S
< 3.5
+ 15% (minimum + 0.48mm
- 10% - 0.32mm )
± 10% (minimum± 0.2mm )
3.5~20
+15% -10%
±10%
> 20
D < 219
± 10%
±7.5%
D ≥ 219
+12.5% -10.0%
±10%
Cold drawn pipe
D
≤ 30
± 0.20mm
± 0.15mm
> 30~50
± 0.30mm
± 0.25mm
> 50
±0.8%
±0.6%
S
2~3
+12% -10%
±10%
> 3
±10%
±7.5%
Allowable deviation(according to GB3087)
Steel grade
Size mm
Allowable deviation
Common grade
High grade
Hot-rolled pipe
D
≤ 159
±1.0%( minimum± 0.50mm )
±0.75%( minimum± 0.40mm )
> 159
±1.0%
±0.90%
S
≤ 20
+15.0%( minimum + 0.45mm ) - 12.5% - 0.35mm )
±10%( minimum± 0.30mm )
> 20
±12.5%
±10%
Cold drawn pipe
D
10 ~ 30
± 0.40mm
± 0.20mm
> 30 ~ 50
± 0.45mm
± 0.25mm
> 50
+1.0%
±0.75%
S
1.5 ~ 3.0
+15% - 10%
±10%
> 3.0
+12.5% - 10%
±10%
Allowable deviation(according to other srandards)
Item
Standard
Range
Allowable deviation
Outer diameter
DIN17175
Hot pipe
D ≤ 100mm
± 0.75%( minimum± 0.5mm )
 
D > 100~ 320mm
± 0.9%
 
Cold pipe: 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 pipe
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 pipe
D < 40
S < 2mm
+0.4~ 0mm
S ≥ 2mm
+20~0%
D ≥ 40
+22~0%
ASME SA-106
 
-12.5%
                 
.

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