|
钢管种类 |
钢管尺寸 |
允许偏差 | ||
|
普通级 |
高 级 | |||
|
热轧(挤压、扩)管 |
外径D |
全部 |
±1％(最小±0.50) |
|
|
壁厚S |
全部 |
+15% 小+0.45
-12.5% -0.40 |
| |
|
冷拔(轧)管 |
外径D |
6-10 |
±0.20 |
±0.15 |
|
>10-30 |
±0.40 |
±0.20 | ||
|
>30-50 |
±0.45 |
±0.30 | ||
|
|
|
| ||
|
>50 |
±1％ |
±0.8％ | ||
|
壁厚s |
≤1 |
±0.15 |
±0.12 | |
|
>1-3 |
+15％
-10％ |
+12.5％
-10％ | ||
|
>3 |
+12.5％
-10％ |
±10％ | ||
|
89×4.5-8-10-12-14-16-18-20 |
273×7-9-12-15-18-20-25 |
|
95×4.5-6-8-10-12-14-16-20 |
273×30-35-38-40-45-50 |
|
102×4.5-5-6-7-8-10-12-14-16-20 |
299×8-12-16-20-24-28 |
|
108×4.5-5-6-7-8-10-12-14-18-20-22 |
299×30-32-36-38-40-45 |
|
114×4.5-5-6-7-8-10-12-14-18-20 |
325×8-12-14-18-38-42 |
|
121×4.5-5-6-7-8-10-12-14-16-20 |
325×28-32-34-38-42 |
|
127×4.5-5-6-7-8-10-12-14-16-20 |
351×10-16-20-25-40 |
|
133×4.5-6-8-12-14-16-18-20-25-30 |
355×6-18-20-25-30-40/52 |
|
140×5-6-7-8-9-10-12-14-16-20-22 |
377×8-12-15-20-24-28 |
