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Technology |
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shape and location tolerance of pipe fittings
| Ultimate windage of pipe fittings' dimension mm |
| Items |
Pipe fittings' varieties |
Range of Nominal coherent diameter |
| 15-65 |
80-100 |
125-200 |
250-450 |
500 |
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Ultimate windage |
| Exterior diameter of end |
All pipe fittings |
+1.6
-0.8 |
±1.6 |
+2.4
-1.6 |
+4.0
-3.2 |
+6.4
-4.8 |
| Interior diameter of end1） |
±0.8 |
±1.6 |
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±3.2 |
±4.8 |
| Thickness of wall2） |
Not less than 87.5% of nominal thickness of wall |
| Distance between center and end H，F |
45° ,90° Elbow |
±2 |
±3 |
| Distance between center and center P |
180° Elbow |
±7 |
±10 |
| Distance between back and end K |
±7 |
| Length L |
Tie-in of special diameter |
±2 |
±3 |
| Distance between center and end C，M |
Three-direction link |
±2 |
±3 |
| Distance between back and end E，E |
Cap of pipe |
±4 |
±7 |
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