petroleum tubing thread gages

API thread Gauges usage:

Used for checking API internal & external thread. 
Conform to: API 5B and 7. 
CSG,LCSG,LP,BCSG,TBG,UPTBG

API Thread Gauges:

Used for checking API internal and external threads.

Spec 5B:

CSG 4-1/2 to 20"

LCSG 4-1/2 to 20"

LP 1/8 to 12"

BCSG 4-1/2 to 6"

TBG1.050 to 4-1/2"

UPTBG 1.050 to 4-1/2"

Spec 7-2

NC10 to NC77

REG 2-3/8 to 8-5/8"

FH 3-1/2 to 6-5/8"

IF 2-3/8 to 5-1/2"

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