API 5B 8 ROUND CASING THREAD GAUGES

Northern Gauge manufactures API 5B 8 round casing plug and ring gages in both Short thread casing “STC” and Long Thread Casing “LTC” from 4-1/2” to 13-3/8”. All working gages are manufactured in full compliance to API 5B and fully traceable to API reference masters.

ItemDescription
C401.0 4.5" 8 ROUND CASING PLUG GAUGE NIST
C401.1 4.5" 8 ROUND SHORT CASING RING GAUGE NIST
C402 4.5" 8 ROUND LONG CASING RING GAUGE NIST
C403 5" 8 ROUND CASING PLUG GAUGE NIST
C404 5" 8 ROUND SHORT CASING RING GAUGE NIST
C405 5" 8 ROUND LONG CASING RING GAUGE NIST
C406 5.5" 8 ROUND CASING PLUG GAUGE NIST
C407 5.5" 8 ROUND SHORT CASING RING GAUGE NIST
C408 5.5" 8 ROUND LONG CASING RING GAUGE NIST
C409 6-5/8" 8 ROUND CASING PLUG GAUGE NIST
C410 6-5/8" 8 ROUND SHORT CASING RING GAUGE NIST
C411 6-5/8" 8 ROUND LONG CASING RING GAUGE NIST
C412 7" 8 ROUND CASING PLUG GAUGE NIST
C413 7" 8 ROUND SHORT CASING RING GAUGE NIST
C414 7" 8 ROUND LONG CASING RING GAUGE NIST
C415 7-5/8" 8 ROUND CASING PLUG GAUGE NIST
C416 7-5/8" 8 ROUND SHORT CASING RING GAUGE NIST
C417 7-5/8" 8 ROUND LONG CASING RING GAUGE NIST
C418 8-5/8" 8 ROUND CASING PLUG GAUGE  NIST
C419 8-5/8" 8 ROUND SHORT CASING RING GAUGE NIST
C420 8-5/8" 8 ROUND LONG CASING RING GAUGE NIST
C421 9-5/8" 8 ROUND CASING PLUG GAUGE NIST
C422 9-5/8" 8 ROUND SHORT CASING RING GAUGE NIST
C423 9-5/8" 8 ROUND LONG CASING RING GAUGE  NIST
C424 10-3/4" 8 ROUND CASING PLUG GAUGE NIM
C425 10-3/4" 8 ROUND SHORT CASING RING GAUGE NIM
C426 10-3/4" 8 ROUND LONG CASING RING GAUGE NIM
C427 11-3/4" 8 ROUND CASING PLUG GAUGE NIST
C428 11-3/4" 8 ROUND SHORT CASING RING GAUGE NIST
C429 11-3/4" 8 ROUND LONG CASING RING GAUGE NIST
C430 13-3/8" 8 ROUND CASING PLUG GAUGE NIST
C431 13-3/8" 8 ROUND SHORT CASING RING GAUGE
C432 13-3/8" 8 ROUND LONG CASING RING GAUGE