Pipe / G Threads are used for general purpose pipe fittings where pressure tight joints are not required on Threads.
| 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. |