... first grade thread machining center and measuring equipment, all working gauges and reference master gauges are manufactured and calibrated conform to API Spec 5B standard. When you order, please specify the following information: 1. Type and Sizes of
... first grade thread machining center and measuring equipment, all working gauges and reference master gauges are manufactured and calibrated conform to API Spec 5B standard. When you order, please specify the following information: 1. Type and Sizes of more
