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BCSG Gages
parameters1:Buttress Casing
parameters2:API Buttress casing
parameters3:API reference master gage
API Buttress casing working 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.

API Buttress casing working 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.

BUTTRESS CASING

SIZE

T.P.I.

T.P.F.

4-1/2

5

3/4

5

5

3/4

5-1/2

5

3/4

5-3/4

5

3/4

6-5/8

5

3/4

7

5

3/4

7-5/8

5

3/4

8-5/8

5

3/4

9-5/8

5

3/4

10-3/4

5

3/4

11-3/4

5

3/4

13-3/8

5

3/4

16

5

1

18-5/8

5

1

20

5

1

 

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