More Products

Besides API ring & plug gauges, Shanghai Jingoo also works with top manufacturers in China and overseas to supply high-quality measuring instruments related with machining of OCTG thread connections, to serve our customers in a better, more comprehensive way. All products come with authoritative calibration or inspection certificates.


Please check below to download the catalogues:



General Measuring Instruments


General Measuring Instruments


Chinese Measuring Instruments


Mitutoyo Measuring Instruments



OCTG Threading Inserts


Thread Insert