1 1/2“ AMMT Workig Thread Ring&Plug Gauge/American MT/AMT/AMMT Gages/American Mining Macaroni Tubing

MT is Macaroni Tubing, AMT is American Macaroni Tubing; AMMT is American Mining Macaroni Tubing FYOU PMEC, Leading Solutions, Professional in API Working &Master Gages、Graphite Electrodes Working&Master Thread Gauges&ANSI/ASME Thread Gauges, manufacturers licensed by API Spec 5B, API Spec7-2&API Spec11B. All the Gages come with the Long Form Calibration Certificates traceable to NIM or NIST ,Availiable for Audit. Contact US: Email: sales@; Website: