API Working Gauges - API 5B&7-2 Gauges

1. Import thread grinder(MATRIX CNC) can strictly control the tolerance zone of threaded single parameter, pitch, flank angle as close as possible to the midline position to guarantee the ideal state of the thread type, so that the process of gauge thread surface area contact gauge inspection products.
2. By controlling the standoff value to improve the wear resistance of the gauge.