- General Details
- API SPEC. 5B (Casing & Tubing)
- API Spec. 7 - 2 (Rotary Shouldered Connections)
- Order Enquiry
- Documents
BAKER has collaborated with KURODA PRECISION INDUSTRIES, a leading Japanese thread gauge manufacturer, to distribute their high quality API thread gauges in India. KURODA has been granted the right of use of API Official Monogram for the following API Thread Gauges since 1957; Specification 5B under the License no. 5B-0015, Specification 7-2 under the License no. 7-2-0187.
Kuroda Precision Industries: A Brief introduction
Kuroda was founded in 1925 as one of the first dedicated gauge manufacturers in Japan. Since then, they have developed various products based on precision measuring and processing technology. While working to preserve traditional skills, techniques and reputation for best quality, they also employ latest technologies through active R&D. Kuroda’s mission continues to be that of support to the customers through their high precision measuring and processing technology based on the philosophy of P&P (Precision and Productivity) and the spirit of C&C (Challenge and Create).
FEATURES:
- Light construction
- Longer operating life
- Manufacturing to the highest Japanese quality standards
- Best Raw materials from Japan used
- Easy to use: The handle is standard-equipped on all products
- Upon request, a Hook Ring can be mounted on larger diameter ring gauges for better work ability
When ordering, please provide information on:
Type of gauge
Size of gauge
Reference master or working gauges
Plug or ring or both
Right hand or left hand, in case of API Spec. 7-2 thread gauges
Inspection results to be stated in inches or mm
LP
Line Pipe Thread GaugesThread angle 60°
| Size | T.P.I. | Taper |
|---|---|---|
| ⅛ | 27 | 1 : 16 |
| ¼ | 18 | 1 : 16 |
| ⅜ | 18 | 1 : 16 |
| ½ | 14 | 1 : 16 |
| ¾ | 14 | 1 : 16 |
| 1 | 11½ | 1 : 16 |
| 1¼ | 11½ | 1 : 16 |
| 1½ | 11½ | 1 : 16 |
| 2 | 11½ | 1 : 16 |
| 2½ | 8 | 1 : 16 |
| 3 | 8 | 1 : 16 |
| 3½ | 8 | 1 : 16 |
| 4 | 8 | 1 : 16 |
| 5 | 8 | 1 : 16 |
| 6 | 8 | 1 : 16 |
| 8 | 8 | 1 : 16 |
| 10 | 8 | 1 : 16 |
| 12 | 8 | 1 : 16 |
| 14D | 8 | 1 : 16 |
| 16D | 8 | 1 : 16 |
| 18D | 8 | 1 : 16 |
| 20D | 8 | 1 : 16 |
CSG
Casing Round Thread GaugesThread angle 60°
| Size | T.P.I. | Taper |
|---|---|---|
| 4 ½ | *8 | 1 : 16 |
| 5 | *8 | 1 : 16 |
| 5 ½ | *8 | 1 : 16 |
| 6 | *8 | 1 : 16 |
| 7 | *8 | 1 : 16 |
| 7 ⅝ | *8 | 1 : 16 |
| 8 ⅝ | *8 | 1 : 16 |
| 9 ⅝ | *8 | 1 : 16 |
| 10 ¾ | 8 | 1 : 16 |
| 11 ¾ | 8 | 1 : 16 |
| 13 ⅜ | 8 | 1 : 16 |
| 16 | 8 | 1 : 16 |
| 18 ⅝ | 8 | 1 : 16 |
| 20 | *8 | 1 : 16 |
Note : *Short and Long.
BUTTRESS CSG
Buttress Casing Thread GaugesThread angle 3° x 10°
| Size | T.P.I. | Taper |
|---|---|---|
| 4 ½ | 5 | 1 : 16 |
| 5 | 5 | 1 : 16 |
| 5 ½ | 5 | 1 : 16 |
| 6 ⅝ | 5 | 1 : 16 |
| 7 | 5 | 1 : 16 |
| 7 ⅝ | 5 | 1 : 16 |
| 8 ⅝ | 5 | 1 : 16 |
| 9 ⅝ | 5 | 1 : 16 |
| 10 ¾ | 5 | 1 : 16 |
| 11 ¾ | 5 | 1 : 16 |
| 13 ⅜ | 5 | 1 : 16 |
| 16 | 5 | 1 : 12 |
| 18 ⅝ | 5 | 1 : 12 |
| 20 | 5 | 1 : 12 |
TBG
Non-Upset Tubing Thread GaugesThread angle 60°
| Size | T.P.I. | Taper |
|---|---|---|
| 1.050 | 10 | 1 : 16 |
| 1.315 | 10 | 1 : 16 |
| 1.660 | 10 | 1 : 16 |
| 1.900 | 10 | 1 : 16 |
| 2 ⅜ | 10 | 1 : 16 |
| 2 ⅞ | 10 | 1 : 16 |
| 3 ½ | 10 | 1 : 16 |
| 4 | 8 | 1 : 16 |
| 4 ½ | 8 | 1 : 16 |
UP TBG
External-Upset Tubing Thread GaugesThread angle 60°
| Size | T.P.I. | Taper |
|---|---|---|
| 1.050 | 10 | 1 : 16 |
| 1.315 | 10 | 1 : 16 |
| 1.660 | 10 | 1 : 16 |
| 1.900 | 10 | 1 : 16 |
| 2 ⅜ | 8 | 1 : 16 |
| 2 ⅞ | 8 | 1 : 16 |
| 3 ½ | 8 | 1 : 16 |
| 4 | 8 | 1 : 16 |
| 4 ½ | 8 | 1 : 16 |
Ex. Li. Casing
Extreme-Line Casing Thread & Seal GaugesThread angle 6° x 6°
| Size | T.P.I. | Taper |
|---|---|---|
| 5 | 6 | 1 : 8 |
| 5 ½ | 6 | 1 : 8 |
| 6 ⅝ | 6 | 1 : 8 |
| 7 | 6 | 1 : 8 |
| 7 ⅝ | 6 | 1 : 8 |
| 8 ⅝ | 5 | 1 : 9.6 |
| 9 ⅝ | 5 | 1 : 9.6 |
| 10 ¾ | 5 | 1 : 9.6 |
NC
Number StyleThread angle 60°
| Size | T.P.I. | Taper |
|---|---|---|
| NC 23 | 4 | 1 : 6 |
| NC 26 | 4 | 1 : 6 |
| NC 31 | 4 | 1 : 6 |
| NC 35 | 4 | 1 : 6 |
| NC 38 | 4 | 1 : 6 |
| NC 40 | 4 | 1 : 6 |
| NC 44 | 4 | 1 : 6 |
| NC 46 | 4 | 1 : 6 |
| NC 50 | 4 | 1 : 6 |
| NC 56 | 4 | 1 : 4 |
| NC 61 | 4 | 1 : 4 |
| NC 70 | 4 | 1 : 4 |
| NC 77 | 4 | 1 : 4 |
REG
Regular Style (Right or Left hand)Thread angle 60°
| Size | T.P.I. | Taper |
|---|---|---|
| 1 | 6 | 1 : 8 |
| 1 ½ | 6 | 1 : 8 |
| 2 ⅜ | 5 | 1 : 4 |
| 2 ⅞ | 5 | 1 : 4 |
| 3 ½ | 5 | 1 : 4 |
| 4 ½ | 5 | 1 : 4 |
| 5 ½ | 4 | 1 : 4 |
| 6 ⅝ | 4 | 1 : 6 |
| 7 ⅝ | 4 | 1 : 4 |
| 8 ⅝ | 4 | 1 : 4 |
FH
Full-hole StyleThread angle 60°
| Size | T.P.I. | Taper |
|---|---|---|
| 3 ½ | 5 | 1 : 4 |
| 4 | 4 | 1 : 6 |
| 4 ½ | 5 | 1 : 4 |
| 5 ½ | 4 | 1 : 6 |
| 6 ⅝ | 4 | 1 : 6 |
IF
Internal-Flush StyleThread angle 60°
| Size | T.P.I. | Taper |
|---|---|---|
| 2 ⅜ | 4 | 1 : 6 |
| 2 ⅞ | 4 | 1 : 6 |
| 3 ½ | 4 | 1 : 6 |
| 4 | 4 | 1 : 6 |
| 4 ½ | 4 | 1 : 6 |
| 5 ½ | 4 | 1 : 6 |
