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OCTG Accessories

API Casing Coupling

Standard:API 5CT&5B

Size (Pipe OD) (in):4-1/2, 5, 5-1/2, 6-5/8, 7, 7-5/8, 8-5/8, 9-5/8, 10-3/4, 11-3/4, 13-3/8, 16, 18-5/8, 20

API Tubing Coupling

tandard:API 5CT&5B

Size (Pipe OD) (in):1.9''-4-1/2''

Casing Pup Joint

Size:4-1/2 ~ 20 in (114.3 ~ 508 mm) nominal size OD

Standard:API 5CT, API 5B

Tubing Pup Joint

Size:1.05 ~ 4-1/2 in (26.67 ~ 114.3 mm) nominal size OD

Standard:API 5CT, API 5B

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Description

Casing and tubing couplings are short lengths of pipes applied to connect two joints of casing and tubing. They are painted different color codes on their external surface to indicate their grades.Casing coupling and tubing coupling are manufactured according to API 5CT and 5B specifications.

API Casing Coupling


API Tubing Coupling

Pup Joints are used to adjust the height of full length tubing or casing strings. They are also used to adjust the depth of downhole tools.

Casing Pup Joint



Tubing Pup Joint





Specification

Coupling

API Casing Coupling

Standard:API 5CT&5B

Size (Pipe OD) (in):4-1/2, 5, 5-1/2, 6-5/8, 7, 7-5/8, 8-5/8, 9-5/8, 10-3/4, 11-3/4, 13-3/8, 16, 18-5/8, 20

Threading types:Short Round-Thread Casing (STC),Long Round-Thread Casing (LC),Buttress Thread Casing (BC)

Grade:H-40, J-55, K-55, C-75, L-80, N-80, C-95, AS-95, P-110, L80-13CR


API Tubing Coupling

Standard:API 5CT&5B

Size (Pipe OD) (in):1.9''-4-1/2''

Upset:Non Upset,External Upset

Grade:J-55, C-75, L-80, N-80, C-95, P-110

Option:Electro-zinc plated, Phosphorised

Threading types:API 5B - Last Edition or Premium, VAM Premium, EUE, NUE, special seal, metal-to-metal seal and VAGT


Pup joint

Casing Pup Joint

Size:4-1/2 ~ 20 in (114.3 ~ 508 mm) nominal size OD

Weight:Standard or Heavy Wall

Length:2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20 ft (with other lengths available upon request)

Grade:H40, J55, K55, L80, N80/Q, C90, T95, P110, Q125

Threading types:BTC, STC, LTC

Standard:API 5CT, API 5B

Uses:used to adjust the height of full length tubing or casing strings.


Tubing Pup Joint

Size:1.05 ~ 4-1/2 in (26.67 ~ 114.3 mm) nominal size OD

Weight:Standard or Heavy Wall

Length:2, 3, 4, 5, 6, 8, 10, 12 ft (with other lengths available upon request)

Grade:H40, J55, L80, N80/Q, C90, T95, P110

Threading types:EUE, NUE

Standard:API 5CT, API 5B

Uses:used to adjust the height of full length tubing or casing strings.

Standard

API Spec 5CT--Specification 5CT/ISO 11960, Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells


API 5B--This specification covers dimensions, tolerances, and marking requirements for API threads and the gauges that control the acceptance criteria for the threads. Thread element gauges, instruments, and requirements for the inspection of threads for line pipe, round thread casing, round thread tubing, and buttress casing connections are included

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