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对焊管件尺寸公差 ( Tolerances For Butt-welding Fittings ) |
公称直径
Nominal Diameter |
坡扣处外径
O.D.For Bevel End |
端部内径
I.D.For End |
壁厚
Wall Thickness |
90o、45o弯头
Elbow |
三通
Tee |
异径管
Reducer |
管帽
Cap |
180o弯头
Elbow |
| DN |
NPS |
A |
B |
C |
M |
H |
E |
O |
K |
不平度 |
| 15-65 |
1/2-2.1/2 |
+1.6
-0.8 |
±0.8 |
-12.5% |
±1.6 |
±1.6 |
±1.6 |
±1.6 |
±1.6 |
±3.2 |
±6.4 |
±6.4 |
±0.8 |
| 80-100 |
3-4 |
±1.6 |
±1.6 |
| 125-200 |
5-8 |
+2.4
-1.6 |
±6.4 |
| 250-450 |
10-18 |
+4.0
-3.2 |
±3.2 |
±2.4 |
±2.4 |
±2.4 |
±2.4 |
±2.4 |
±9.6 |
| 500-600 |
20-24 |
+6.4
-4.8 |
±4.8 |
±3.2 |
±3.2 |
±3.2 |
±3.2 |
±4.8 |
±9.6 |
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| 650-750 |
26-30 |
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| 800-1200 |
32-48 |
±4.8 |
±4.8 |
±4.8 |
±4.8 |
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| 1250-1500 |
50-60 |
+9.6
-6.4 |
±6.4 |
±9.6 |
±9.6 |
±9.6 |
±9.6 |
±9.6 |
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| 1550-1750 |
62-70 |
+12.7
-9.6 |
±9.6 |
±12.7 |
±12.7 |
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| 1800-2000 |
72-80 |
+16
-12 |
±12 |
±16 |
±16 |
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