GB/T 7306-1987 in English
SUPERSEDEDPipe threads where pressure-tight joints are made on the threads
- Issued on:-
- Implemented on:1988-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$253.00
| Standard No: | GB/T 7306-1987 |
| Document status: | SUPERSEDED |
| Superseded by: |
GB/T 7306.1-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads--Part 1:Parallel internal and taper external threads
GB/T 7306.2-2000 Pipe threads with 55 degree thread angle where pressure-tight joints are made on the threads--Part 2:Taper internal and external threads |
| Superseded on: | 2000-12-01 |
| Title in English: | Pipe threads where pressure-tight joints are made on the threads |
| Title in Chinese: | 用螺纹密封的管螺纹 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Implemented on: | 1988-02-01 |
| Chinese Classification: | J04-Basic standards and general methods |
| Professional Classification: | GB-National Standard |
| Related Keywords: | pipe threads
pressure-tight joints pipe thread pipe joints threaded joints |
1 Application scope
This standard specifies the thread form, dimension, tolerance and designation of pipe thread for thread pairs on which pressure-tight joints are made. These threads are taper internal and external, parallel internal and taper external and are intended for pipes, pipe joints, cocks, valves and other fittings interconnected by threaded joints.
If necessary, it is allowed to add appropriate jointing medium into the thread pair to ensure the pressure-tight joints.
This standard is equivalent to international standard ISO 7/1-1982 Pipe threads where pressure-tight joints are made on the threads.
2 Thread form
2.1 The taper thread has basic thread form complying with Figure 1 and dimension calculated according to the following equations:
1 Application scope
2 Thread form
3 Codes
4 Terms
5 Basic dimension
6 Tolerance
7 Designation
Additional explanation:

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