BOMCO Precision Machinery Plant is the largest and main research & development manufacturing base of oilfield thread gauges, at the same time is the main research & development manufacturing base of oilfield gears for oilfield line equipment, metallurgical industry, shipping industry in China. The oilfield purpose thread gauges designed and manufactured in plant has won the national silver medal in China. 
The temperature in this workshop keeps at 20ºC±1ºC all year round. It is mainly for the thread gauge grinding and precision inspection. There are two sets of USA Drake CNC Thread Grinders, five sets of German Buderus thread grinders, German CenterMas900×1200×700 Zeiss Contura coordinate measuring machine (CMM), Holland MSXL400 Single Thread Gauge Inspection Instrument and all kinds of master guages in API, which ensures the precision of production-manufacturing and measurement. 
BOMCO supply all kinds of thread gauges listed in the API Spec 5B and 7-2.BOMCO also supply a thread gauge having a special thread form,or a big one in diameter as large as 27″(685mm).All of the gauges manufactured by BOMCO have outstanding advantages: unmatched accuracy and durability. In the field of thread gauge, BOMCO has continued to advance with the history of gauge in our contury, and has been striving for improvement in the product quality and reliability. The fact proves that our master and working gauges can meet and exceed specifications established by API. We believe firmly that it will be of service to the establishment of traceability of customer's measurement equipment to the national
standard through the calibration and certification of gauge blocks and other various gauges as well as measurement equipment.
Product summary