资讯动态
阀门用金属波纹管 焊接管纵焊缝条数_阀门标准
阀门用金属波纹管 焊接管纵焊缝条数
|
管坯长度 mm
|
管坯外径 mm |
|
| ≤250 | ＞250～600 | |
| 焊缝条数 | ||
| ≤1000 | 1 | ≤2 |
| ＞1000 | 1 | ≤2 |
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