Pipe/G Thread Gauges
Pipe / G Threads are used for general purpose pipe fittings where pressure tight joints are not required on Threads.
Specification:
ISO Standard – Basic Dimensions: ISO 228 – 1 : 2000 & Gauging Practice: ISO 228 – 2 : 1987.
British Standard – BS 2779 : 1986.
Indian Standard – Basic Dimensions : IS 2643 : 2005 & Gauging Practice: IS 10216 : 1988.
Japanese Standard – JIS B 0202 : 1999.
Manufacturing Range :
Pipe Diameter 1/16 to 6″ Above 6″ Diameter sizes (PF) are manufactured as per JIS B JIS B 0202-1999.
| Pipe Diameter. | TPI | Tolerance Class | |
|---|---|---|---|
| 1/16. 1/8 | 28 | ||
| 1/4, 3/8 | 19 | Thread Plugs. Only General Class | Thread Rings |
| 1/2, 5/8, 3/4, 7/8 | 14 | • Class B | |
| 1, (1.1/16), 1.1/8, 1.1/4, (1.3/8),(1.5/8) 1.3/4, (1.7/8) , 2, (2.1/8), 2.1/4, (2.5/16), (2.3/8), 2.1/2, 2.3/4, (2.7/8), 3, (3.1/4), 3.1/2, 4,4.1/2, 5, 5.1/2, 6 | 11 | • Class A Tolerance for class 'A' rings are close / tighter than Class 'B'. |
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