Short Casing Thread Plug and Thread Ring Gages
FYOU PMEC provides API 8 Round Casing working (STC & LTC) and reference master gages per API Specification 5B for sizes from 4-1/2 to 20 inches in diameter. All working gages are manufactured and certified using a certified API reference master gage as required by the standard.
| CASING WORKING/MASTER/TAPER GAGES | |||||
| SIZE | Outer Dia. | T.P.I | T.P.F | TAPER | ANGLE |
| 4 1/2 (CSG,LCSG) | 114.30 | 8 | 3/4 | 1:16 | 60° |
| 5 (CSG,LCSG) | 127.00 | 8 | 3/4 | ||
| 5 1/2 (CSG,LCSG) | 139.70 | 8 | 3/4 | ||
| 6 5/8 (CSG,LCSG) | 168.28 | 8 | 3/4 | ||
| 7 (CSG,LCSG) | 177.80 | 8 | 3/4 | ||
| 7 5/8 (CSG,LCSG) | 193.68 | 8 | 3/4 | ||
| 8 5/8 (CSG,LCSG) | 219.08 | 8 | 3/4 | ||
| 9 5/8 (CSG,LCSG | 244.48 | 8 | 3/4 | ||
| 10 3/4 (CSG,LCSG) | 273.05 | 8 | 3/4 | ||
| 11 3/4 (CSG,LCSG) | 298.45 | 8 | 3/4 | ||
| 13 3/8 (CSG,LCSG) | 339.73 | 8 | 3/4 | ||
| 16 (CSG,LCSG) | 406.40 | 8 | 3/4 | ||
| 18 5/8 (CSG,LCSG) | 473.08 | 8 | 3/4 | ||
| 20 (CSG,LCSG) | 508.00 | 8 | 3/4 | ||
Short Casing Thread Plug and Thread Ring Gages
Short casing thread plug and ring gages are used to inspect the threads and dimensions of casings, which are pipes that line the walls of a drilled well. Casings are essential for the stability and safety of the well, as well as the extraction of oil and gas. The American Petroleum Institute (API) has developed standards for the design, manufacture, and inspection of casings and their threads, known as API Spec 5B.
Short casing gages are one type of gage that conform to API Spec 5B. They have an 8-round thread with a coupling, which means they have 8 threads per inch, a 3/4 inch taper per foot, and a 60 degree thread angle. The gages are classified as either plug gages or ring gages, depending on whether they are used to check the internal or external threads of the casing.
Short casing gages are important tools for ensuring the quality and performance of casings and their threads. By following the proper procedures and standards, users can avoid potential problems and risks associated with casings and wells.