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江苏 流体输送用不锈钢焊接钢管的尺寸偏差
外 径 允 许 偏 差 |
类 别 |
外 径 |
允许偏差 | |||
普通级 |
较高级 | |||||
焊接状态 |
<20 |
±0.30 |
±0.20 | |||
≥20~<50 |
士0.50 |
±0.40 | ||||
≥50 |
±1% |
士0.8% | ||||
热处理状态 |
<13 |
±0.25 |
±0.20 | |||
≥13~<25 |
±0.40 |
±0.30 | ||||
≥25~<40 |
±0.60 |
±0.40 | ||||
≥40~<65 |
±0.80 |
±0.60 | ||||
≥65~<90 |
±1.00 |
±0.80 | ||||
≥90~<140 |
±1.20 |
±1.00 | ||||
≥140 |
按协议 |
按协议 | ||||
冷拔(轧)状态磨抛光状态 |
<25 |
±0.12 |
±0.10 | |||
≥25~<40 |
±0.15 |
±0.12 | ||||
≥40~<50 |
±0.18 |
±0.15 | ||||
≥50~<60 |
±0.20 |
±0.18 | ||||
≥60~<70 |
±0.23 |
±0.20 | ||||
≥70~<80 |
±0.25 |
±0.23 | ||||
≥80~<90 |
±0.30 |
±0.25 | ||||
≥90~<100 |
±0.40 |
±0.30 | ||||
≥100 |
±0.50% |
±0.40% | ||||
壁厚允许偏差 |
钢板(带)料状态 |
壁厚 |
壁厚允许偏差 | |||
热轧钢板(带)或热轧纵剪钢带 |
<4 |
+0.5 -0.6 | ||||
≥4 |
+12.5~-15% | |||||
冷轧钢板(带)或冷轧纵剪钢带 |
≤0.5 |
±0.10 | ||||
>0.5~1 |
±0.15 | |||||
>1~2 |
±0.20 | |||||
>2 |
±10% |
|