NPT BSPT PT RC 1/16 1/8 1/4 3/8 1/2 3/4 1" Straight pipe taper pipe thread Thread plug gauge ring gauge Test specification

NPT BSPT PT RC 1/16 1/8 1/4 3/8 1/2 3/4 1" Straight pipe taper pipe thread Thread plug gauge ring gauge Test specification

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