Sharpfine offers American Petroleum Institute – API thread gauges.
We are able to provide special conical pipe thread gauges for the petroleum industry,designed, manufactured and inspected according to the structural dimensions of the parts.
| Gauge Code | Outer dia. Ø | Taper | Gauge Code | Outer dia. Ø | Taper |
|---|---|---|---|---|---|
| 4 1/2 (CSG,LCSG) | 114.30 | 1:16 | 8 5/8 (CSG,LCSG) | 219.08 | 1:16 |
| 5 (CSG,LCSG) | 127.00 | 9 5/8 (CSG,LCSG) | 244.48 | ||
| 5 1/2 (CSG,LCSG) | 139.70 | 10 3/4 (CSG,LCSG) | 273.05 | ||
| 6 5/8 (CSG,LCSG) | 168.28 | 11 3/4 (CSG,LCSG) | 298.45 | ||
| 7 (CSG,LCSG) | 177.80 | 13 3/8 (CSG,LCSG) | 339.73 | ||
| 7 5/8 (CSG,LCSG) | 193.68 | 16 (CSG,LCSG) | 406.40 | ||
| The pitch of API gauges:3.175(8); The form angle of API thread gauge:60° | |||||
| Gauge Code | Outer dia. Ø | Taper | Gauge Code | Outer dia. Ø | Taper |
|---|---|---|---|---|---|
| 4 1/2 BCSG | 114.30 | 1:16 | 8 5/8 BCSG | 219.08 | 1:16 |
| 5 BCSG | 127.00 | 9 5/8 BCSG | 244.48 | ||
| 5 1/2 BCSG | 139.70 | 10 3/4 BCSG | 273.05 | ||
| 6 5/8 BCSG | 168.28 | 11 3/4 BCSG | 298.45 | ||
| 7 BCSG | 177.80 | 13 3/8 BCSG | 339.73 | ||
| 7 5/8 BCSG | 193.68 | 16 BCSG | 406.40 | 1:12 | |
| The pitch of API gauges:5.08(5); The form angle of API thread gauge:3°, 10°. | |||||
| Gauge Code | Outer dia. Ø | Pitch | Taper | Gauge Code | Outer dia. Ø | Pitch | Taper |
|---|---|---|---|---|---|---|---|
| 1.050 TBG | 26.67 | 2.54(10) | 1:16 | 2 7/8 TBG | 73.03 | 2.54(10) | 1:16 |
| 1.315 TBG | 33.40 | 2.54(10) | 3 1/2 TBG | 88.90 | 2.54(10) | ||
| 1.660 TBG | 42.16 | 2.54(10) | 4 TBG | 101.60 | 3.175(8) | ||
| 1.900 TBG | 48.26 | 2.54(10) | 4 1/2 TBG | 114.30 | 3.175(8) | ||
| 2 3/8 TBG | 60.33 | 2.54(10) | |||||
| The form angle of API gauges:60° | |||||||
| Gauge Code | Outer dia. Ø | Pitch | Taper | Gauge Code | Outer dia. Ø | Pitch | Taper |
|---|---|---|---|---|---|---|---|
| 1.050 UPTBG | 26.67 | 2.54(10) | 1:16 | 2 7/8 UPTBG | 73.03 | 3.175(8) | 1:16 |
| 1.315 UPTBG | 33.40 | 2.54(10) | 3 1/2 UPTBG | 88.90 | 3.175(8) | ||
| 1.660 UPTBG | 42.16 | 2.54(10) | 4 UPTBG | 101.60 | 3.175(8) | ||
| 1.900 UPTBG | 48.26 | 2.54(10) | 4 1/2 UPTBG | 114.30 | 3.175(8) | ||
| 2 3/8 UPTBG | 60.33 | 3.175(8) | |||||
| The form angle of API gauges:60° | |||||||
| Gauge Code | Outer dia. Ø | Pitch | Taper | Gauge Code | Outer dia. Ø | Pitch | Taper |
|---|---|---|---|---|---|---|---|
| 1/8 LP | 3.18 | 0.941(27) | 1:16 | 2 1/2 LP | 63.50 | 3.175(8) | 1:16 |
| 1/4 LP | 6.35 | 1.411(18) | 3 LP | 76.20 | 3.175(8) | ||
| 3/8 LP | 9.53 | 1.411(18) | 3 1/2 LP | 88.90 | 3.175(8) | ||
| 1/2 LP | 12.70 | 1.814(14) | 4 LP | 101.60 | 3.175(8) | ||
| 3/4 LP | 19.05 | 1.814(14) | 5 LP | 127.00 | 3.175(8) | ||
| 1 LP | 25.40 | 2.209(11 1/2) | 6 LP | 152.40 | 3.175(8) | ||
| 1 1/4 LP | 31.75 | 2.209(11 1/2) | 8 LP | 203.20 | 3.175(8) | ||
| 1 1/2 LP | 38.10 | 2.209(11 1/2) | 10 LP | 254.00 | 3.175(8) | ||
| 2 | 50.80 | 2.209(11 1/2) | |||||
| The form angle of API gauges:60° | |||||||
