Specification :

FYOU PMEC is the leading supplier of gauges for both plug & ring thread gages in china, FYOU PMEC will meet your requirements and custom build your thread gages to meet your exact specifications. Our gage engineering team is ready to design and work with you on all your thread gaging needs; FYOU PMEC provide a complete line of API ( American Petroleum Institute) plug and ring gages for( both working & masters) :

CASING WORKING/ MASTERS/ TAPERS
SIZE T.P.I T.P.F TAPER ANGLE
4 1/ 2 ( CSG, LCSG) 8 3/ 4 1: 16 60°
5 ( CSG, LCSG) 8 3/ 4
5 1/ 2 ( CSG, LCSG) 8 3/ 4
6 5/ 8 ( CSG, LCSG) 8 3/ 4
7 ( CSG, LCSG) 8 3/ 4
7 5/ 8 ( CSG, LCSG) 8 3/ 4
8 5/ 8 ( CSG, LCSG) 8 3/ 4
10 3/ 4 ( CSG, LCSG) 8 3/ 4
11 3/ 4 ( CSG, LCSG) 8 3/ 4
13 3/ 8 ( CSG, LCSG)
16 ( CSG, LCSG) 8 3/ 4
18 5/ 8 ( CSG, LCSG) 8 3/ 4
20 ( CSG, LCSG) 8 3/ 4