天津鑫佳伟业钢铁贸易有限公司
2016/6/15 9:08:22公称通经 DN | 钢管外径 DW(mm) | 塑覆铜管外径(mm) | 外径允许偏差(mm) | 塑覆壁厚(mm) | 塑覆层允许偏差(mm) | 齿数 |
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齿型环 | 平形环 | 齿型环 | 平形环 |
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15 | 15 | 18.60 | 17.60 | ±0.25 | 1.80 | 1.30 | ±0.20 | 16-25 |
20 | 22 | 25.60 | 24.60 | ±0.25 | 1.80 | 1.30 | ±0.20 | 20-30 |
25 | 28 | 31.60 | 30.60 | ±0.25 | 1.80 | 1.30 | ±0.20 | 20-30 |
32 | 35 | 40.00 | 38.60 | ±0.30 | 2.50 | 1.80 | ±0.25 | 28-35 |
40 | 42 | 47.00 | 45.60 | ±0.30 | 2.50 | 1.80 | ±0.25 | 32-42 |
50 | 54 | 60.00 | 58.00 | ±0.40 | 3.00 | 2.00 | ±0.30 | 42-52 |
