NPSM straight pipe thread ring gages and set plugs are manufactured per ANSI/ASME B1.20.1. NPSM straight pipe thread plug gages are manufactured per ANSI/ASME B1.20.1. All straight pipe thread gages are supplied in a class 2A for rings and set plugs and 2B for working thread plug gages. NPSF straight pipe thread plug gages and ring gages are manufactured per ANSI/ASME B1.20.5. Other straight pipe thread gages include NPSC, NPSL, NPSH, and NH sizes.
Leader Corporation offers API thread gages to Spec. Q1, Spec. 5B, Spec. 7, Spec. 11B as well as many special API gages. Our engineers have served on various API gaging subcommittees. API gages come in all types include casing-round, line pipe, tubing-non upset, tubing-external upset, tubing-integral joint, extreme line casing, NC connections, regular, full hole, internal flush, H-90, slim hole, extra hole, wide open, AOH, PAC, XHole, Sucker rods B1 to B6, Sucker rods P1 to P6, Mining, BECO, D1-22, D1-42, American National special threads, tapered thread gages-AWWA, and many special custom gages.