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’.