1“ P8P6 API SPEC 11B WORKING RING GAUGES/SUCKER ROD AND POLISHED ROD THREAD RING GAGES

1“ P8P6 API SPEC 11B WORKING RING GAUGES/SUCKER ROD AND POLISHED ROD THREAD RING GAGES 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: