1, Applied specification: API Spec 5B;
2, Material: bearing steel that is hardened to Rockwell C60-63;
3, Guaranteed quality: We have been manufacturing API gauges since 1970s. Our gauges have been field-tested by over 800 customers in 35 countries;
4, 3rd-party calibration: All our working gauges are calibrated and certified with certified API reference master gauges by a national-level 3rd-party calibration center which is accredited to ISO/IEC 17025:2005.
When ordering, please specify the following information:
1, Types & sizes of connections;
2, Master gauges or working gauges;
3, Ring or plug, or set;
4, Right hand or left hand.
NON-UPSET TUBING (NUE/TBG) | ||||
---|---|---|---|---|
SIZE | T.P.I | T.P.F. | PITCH DIAMETER | STANDOFF TOLERANCE |
1.660 | 10 | 1:16 | 40.596 | 7.620±0.635 |
1.900 | 46.692 | |||
2-3/8 | 58.757 | |||
2-7/8 | 71.457 | |||
3-1/2 | 87.332 | |||
4 | 8 | 99.414 | 9.525±0.635 | |
4-1/2 | 112.114 |