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| International Standard Category: Inch screw threads |
GB/T 7307-2001 Pipe threads with 55 degree thread angle where pressure-tight joints are not made on the threads
55°非密封管螺纹 ;
| Category No.: | 21.040.20 | Valid Status: | valid |
| Issued Organization: | State Quality and Technology Supervision Bureau | Issued Date: | 2001-02-02 |
| Implemented Date: | 2001-9-1 | Abolished Date: | |
| Superseded Standard.: | Superseded Date: |
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