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전조식은 파이프를 깎아 내지 않는 방식 으로 25A ~ 600A까지 다양한 사이즈군 의 전조가능한 그루빙기계가 있습니다. |
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| Nominal pipe Diameter |
Pipe outer Diameter | The size from pipe end to groove edge A ±0.76 |
Groove width B ±0.76 |
Groove diameter C |
Groove diameter D (참조용) |
Minimum thickness of the pipe sall T |
Outer diameter of the maximum extension surface |
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|---|---|---|---|---|---|---|---|---|---|---|
| Actual size | Tolerance | Actual size | Tolerance | |||||||
| 25 | 33.7 | +0.41 | -0.68 | 15.88 | 7.14 | 30.23 | -0.38 | 1.60 | 1.8 | 34.5 |
| 32 | 42.4 | +0.50 | -0.60 | 15.88 | 7.14 | 38.99 | -0.38 | 1.60 | 1.8 | 43.3 |
| 40 | 48.3 | +0.44 | -0.52 | 15.88 | 7.14 | 45.09 | -0.38 | 1.60 | 1.8 | 49.4 |
| 50 | 60.3 | +0.61 | -0.61 | 15.88 | 8.74 | 57.15 | -0.38 | 1.60 | 1.8 | 62.2 |
| 65 | 76.1 | +0.76 | -0.76 | 15.88 | 8.74 | 72.26 | -0.46 | 1.98 | 2.3 | 77.7 |
| 80 | 88.9 | +0.89 | -0.79 | 15.88 | 8.74 | 84.94 | -0.46 | 1.98 | 2.3 | 90.6 |
| 100 | 114.3 | +1.14 | -0.79 | 15.88 | 8.74 | 110.08 | -0.51 | 2.11 | 2.3 | 116.2 |
| 125 | 139.7 | +1.40 | -0.79 | 15.88 | 8.74 | 135.48 | -0.51 | 2.11 | 2.9 | 141.7 |
| 150 | 165.1 | +1.60 | -0.79 | 15.88 | 8.74 | 160.90 | -0.56 | 2.16 | 2.9 | 167.1 |
| 200 | 216.3 | +1.60 | -0.79 | 19.05 | 11.91 | 211.60 | -0.64 | 2.34 | 2.9 | 220.7 |
| 250 | 267.4 | +1.60 | -0.79 | 19.05 | 11.91 | 262.60 | -0.69 | 2.39 | 3.6 | 271.8 |
| 300 | 318.5 | +1.60 | -0.79 | 19.05 | 11.91 | 312.90 | -0.76 | 2.77 | 4.0 | 322.8 |