Rod style setting standards are designed to preset all models of the CDG Series gages for accurate inspection of API threaded connections. Each set of standards consists of two precision ground rods that are ground to lengths in accordance with API Specification 5B. All the standard styles and connections are available please refer as below chart.


| Thread Type | Connection | Pin Standard | Box Standard |
| STC | 4½” – 9.50# 8R STC | CDGR-412S-9-P | CDGR-412S-9-B |
| 4½” – Other 8R STC | CDGR-412S-O-P | CDGR-412S-O-B | |
| 5” – 11.50# 8R STC | CDGR-5S-11-P | CDGR-5S-11-B | |
| 5” – Other 8R STC | CDGR-5S-O-P | CDGR-5S-O-B | |
| 5½” 8R STC | CDGR-512S-P | CDGR-512S-B | |
| 6⅝” 8R STC | CDGR-658S-P | CDGR-658S-B | |
| 7” – 17.00# 8R STC | CDGR-7S-17-P | CDGR-7S-17-B | |
| 7” – Other 8R STC | CDGR-7S-O-P | CDGR-7S-O-B | |
| 7⅝” 8R STC | CDGR-758S-P | CDGR-758S-B | |
| 8⅝” – 24.00# 8R STC | CDGR-858S-24-P | CDGR-858S-24-B | |
| 8⅝” – Other 8R STC | CDGR-858S-O-P | CDGR-858S-O-B | |
| 9⅝” 8R STC | CDGR-958S-P | CDGR-958S-B>P110 or 958S-B<P110 | |
| 10¾” – 32.75# 8R STC | CDGR-1034S-32-P | CDGR-1034S-32-B | |
| 10¾” – Other 8R STC | CDGR-1034S-O-P | CDGR-1034S-O-B>P110 or CDGR-1034S-O-B<P110 | |
| 11¾” 8R STC | CDGR-1134S-P | CDGR-1134S-B>P110 or CDGR-1134S-B<P110 | |
| 13⅜” 8R STC | CDGR-1338S-P | 1338S-B>P110 or 1338S-B<P110 | |
| 16” 8R STC | CDGR-16S-P | CDGR-16S-B | |
| 18⅝” 8R STC | CDGR-1858S-P | CDGR-1858S-B | |
| 20” 8R STC | CDGR-20S-P | CDGR-20S-B>JK55 or CDGR-20S-B<JK55 |



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