Shanghai Jingoo Petroleum Apparatus Co.,Ltd was founded in 2003 to represent the products of the top 2 API gauge manufacturers in China. Both of them are subsidiary facilities of state-owned corporations and are API-licensed. We are the first company in China that specializes in distributing API gauges and offering professional calibration services.


We are also the authorised distributor of Gagemaker which is a leading provider of thread element gages. >>Read more

Our advantages

Premium quality

Our API thread gages strictly meet the specifications established by American Petroleum Institute and are widely used by China National Petroleum Corporation and China Petrochemical Corporation.

Excellent price

Our company occupies 60% market share of API gages in China, we can offer best price to you.

Immediate delivery 

We keep plentiful stocks for our regular-size gages. Once you place the order, we can arrange the delivery to you within 10 days.

Third-party calibration

For all the API thread gages you buy from us, we will offer third-party calibration done by Baoji Baoshi Petroleum Thread Gauges Inspection Center which is a CNAS-accredited calibration laboratory and whose calibration certificate is traceable to NIST and valid for API audit.

Expert services

Our senior experts from Baoji Baoshi Petroleum Thread Gauges Inspection Center will give you full technological support to solve any problems that may occur during the process of using the gages. We also offer gage calibration services, you don’t have to go anywhere else any longer.

API Gages

API gages