不锈钢无缝管常用国内外标准尺寸对照表你们有需要么?-ayx爱游戏手机登录
时间:10/21/2020 11:17:09 am
不锈钢无缝管常用国内外标准尺寸对照表.xls
不 锈 钢 无 缝 管 常 用 国 内 外 标 准 尺 寸 对 照 表 |
| gb13296-2007 | gb/t14976-2002 | astm a213/a213m | astm a312/a312m |
外径偏差(mm) | 外径 | 允许偏差 | 类别 | 外径 | 允许偏差 | 类别 | 外径 | 允许偏差 | 10.3~48.3 | 0.40/-0.80 |
6~30 | 0.15/-0.20 | 普通级 | 高级 | 热精整管 | ≤101.6 | +0.4/-0.8 | >48.3~114.3 | 0.80/-0.80 |
>30~50 | ±0.30 | 挤压管 | 68~159 | ±1.25%d | ±1.0%d | ﹥101.6~190.5 | +0.4/-1.2 | >114.3~219.1 | 1.60/-0.80 |
>50 | ±0.75%d | ﹥159~426 | ±1.5%d | ﹥190.5~228.6 | +0.4/-1.6 | >219.1~457 | 2.40/-0.80 |
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| 冷拔(轧)管 | 6~10 | ±0.20 | ±0.15 | 冷精整管 | ﹤25.4 | +0.1/-0.1 | >457~660.4 | 3.20/-0.80 |
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| ﹥10~30 | ±0.30 | ±0.20 | 25.4~38.1 | +0.15/-0.15 | >660.4~864 | 4.00/-0.80 |
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| ﹥30~50 | ±0.40 | ±0.30 | ﹥38.1~50.8 | +0.2/-0.2 | >864~1219 | 4.80/-0.80 |
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| ﹥50 | ±0.9%d | ±0.8%d | ≥50.8~63.5 | +0.25/-0.25 |
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| ≥63.5~76.2 | +0.3/-0.3 |
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| ≥76.2~101.6 | +0.38/-0.38 |
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| ﹥101.6~190.5 | +0.38/-0.64 |
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| ﹥190.5~228.6 | +0.38/-1.14 |
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壁厚偏差(mm) | 壁厚 | 允许偏差 | 类别 | 壁厚 | 允许偏差 | 类别 | 壁厚 | 允许偏差 | 壁厚 | 允许偏差 |
d≤38 | 20%s/0%s | 普通级 | 高级 | 热精整管 | ≤2.4 | +40%/-0 | 3.2~63.5 | +20%/-12.5% |
d>38 | 20%s/0%s | 挤压管 | ﹤15 | 15%s/-12.5%s | ±12.5%s | ﹥2.4~3.8 | +35%/-0 | 76.2~457,t/d≤5% | +22.5%/-12.5% |
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| ≥15 | 20%s/-15%s | ﹥3.8~4.6 | +33%/-0 | 76.2~457,t/d﹥5% | +15.0%/-12.5% |
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| 冷拔(轧)管 | ≤3 | ±14%s | 12.5s/-10%s | ﹥4.6 | +28%/-0 | ≥508 | +17.5%/-12.5% |
冷拔(轧)热交换器管,正公差交货 | ﹥3 | 12.5s/-10%s | ±10%s | 冷精整管 | 外径≤38.1mm | +20%/-0 | ≥508,t/d≤5% | +22.5%/-12.5% |
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| 外径﹥38.1mm | +22%/-0 | ≥508,t/d﹥5% | +15.0%/-12.5% |
| din17456 | din17458 | astm a789/a789m |
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外径偏差(mm) | 外径 | 公差等级 | 允许偏差 | 外径 | 公差等级 | 允许偏差 | 外径 | 允许偏差 |
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da≤219.1 | d2 | ±1%, 最小±0.5mm | da≤219.1 | d2 | ±1%, 最小±0.5mm | ≤12.7 | ±0.13 |
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﹥12.7~38.1 | ±0.13 |
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d3 | ±0.75%, 最小±0.3mm | d3 | ±0.75%, 最小±0.3mm | ﹥38.1~88.9 | ±0.25 |
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﹥88.9~139.7 | ±0.38 |
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d4 | ±0.5%, 最小±0.1mm | d4 | ±0.5%, 最小±0.1mm | ﹥139.7~203.2 | ±0.76 |
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壁厚偏差(mm) | 壁厚 | 公差等级 | 允许偏差 | 壁厚 | 公差等级 | 允许偏差 | 外径 | 壁厚允许偏差* |
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da≤219.1 | t3 | ±10%, 最小±0.2mm | da≤219.1 | t3 | ±10%, 最小±0.2mm | ≤12.7 | ±15% |
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﹥12.7~38.1 | ±10% |
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t4 | ±7.5%, 最小±0.15mm | t4 | ±7.5%, 最小±0.15mm | ﹥38.1~88.9 | ±10% |
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﹥88.9~139.7 | ±10% |
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| ﹥139.7~203.2 | ±10% |
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| *薄壁管的定义及壁厚偏差见标准 |
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