Casing  Coupling

API 5CT Round Thread Casing Coupling. The dimension classification for the coupling is the same as the size designation for the pipe on which the coupling is used.
b Groups 1, 2 as well as 3-Tolerance on outdoors diameter W: +_ 1 % however not more than +_ 3,18 mm.
c Group 4-Tolerance on outside size W: +_ 1 % yet not above + 3,18, -1,59 mm.
d Tolerance on diameter of recess, Q, for all teams: + 0,79, 0 mm.

API Buttress Thread Casing Couplinga The dimension classification for the coupling is the same as the size classification for the pipeline on which the coupling is made use of.
b Groups 1, 2 and also 3: Tolerance on outdoors diameter W: +_ 1 % but not higher than +_ 3,18 mm.
c Group 4: Tolerance on outdoors size W: +_ 1 % yet not more than + 3,18 -59 mm.
d Groups 1, 2 and 3: Tolerance on outside diameter Wc: + 0,79, -0,40 mm.

The casing coupling is utilized to attach 2 coverings.
1. Steel grade: J55, K55, N801, N80Q, L80 1, L80 9Cr, L80 13Cr, C90, T95, P110, Q125, and so on
2. Specification: 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, etc.
3. Thread type: Long round thread (LC), brief round string (STC), buttress thread (BC), unique string, and so on.

As a China-based casing coupling producer and vendor, our firm provides a broad variety of products that consists of tubing coupling, NUE API tubing, J55 API casing/ tubing, slotted pipe, and more.

Tubing Coupling

API Non Upset Tubing CouplingSee additionally Figure D. 4 of API Spec. 5CT.
a The dimension classification for the coupling coincides as the size designation for the pipeline on which the coupling is used.
b Tolerance on outdoors diameter W: +_ 1 %.

API External Upset Tubing CouplingSee also Figure D. 5 of API Spec. 5CT.
a The size designation for the coupling is the same as the size classification for the pipe on which the coupling is made use of.
b Tolerance on outdoors diameter W: +_ 1 %.
c Tolerance on outside diameter Wc: +_ 0,38 mm.

The tubing coupling is a joint for connection of two items of tubing.
1. Steel grade: J55, K55, N801, N80Q, L80 1, L80 9Cr, L80 13Cr, C90, T95, P110, Q125, and so on
2. Specification: 2 3/8″, 2 7/8″, 3 1/2″, 4″, 4 1/2″, etc.
3. Thread type: Long round string (LC), short round string (STC), uphold string (BC), special thread, and more.

Thread type: Long round string (LC), short round string (STC), uphold thread (BC), special string, etc.

As a China-based casing coupling producer and also vendor, our company offers an extensive variety of items that includes tubing coupling, NUE API tubing, J55 API casing/ tubing, slotted pipe, as well as a lot more.

Casing Coupling with Internal Thread

Steel grade: J55, K55, N801, N80Q, L80 1, L80 9Cr, L80 13Cr, C90, T95, P110, Q125, and so on
2. String type: Long round string (LC), short round string (STC), strengthen thread (BC), unique thread, and so on.

Pup Joint

The pup joint is a commonly utilized fitting in industrial pipe connection. According to various connections, it can be normally divided into thread and flange types. The threaded type can be further categorized into two head external thread, single head external thread, and flat head external thread types. In addition, the item falls under tubing and casing types based upon various usages.
Compared with the tubing, it is simply different in length. We can produce a variety of flat end and external upset tubing pup joints with J, N, L, and other steel grades and different specifications.
Technical performance
1. The pipeline body takes pleasure in big mechanical strength and excellent general performance.
2. The thread is processed by devoted CNC maker tools, which guarantee high accuracy, trustworthy use, and long life.
3. The coupling adopts phosphating or copper plating, which guarantees good wear resistance.
Specifications
Size: 2 3/8″ – 20″
Material: J55, K55, N80, L80, P110, and so on.
Length: 0.61 m, 0.91 m, 1.22 m, 1.83 m, 2.44 m, 3.05 m, 3.66 m, Tolerance: +_ 0.076.
2 Foot, 3 Foot, 4 Foot, 6 Foot, 8 Foot, 10 Foot, 12 Foot, Tolerance: +_ 3in.

According to various connections, it can be typically divided into thread and flange types. The threaded type can be more categorized into 2 head external thread, single head external thread, and flat head external thread types. In addition, the item falls into tubing and casing types based on various usages.
We can produce a variety of flat end and external upset tubing pup joints with J, N, L, and other steel grades and various specifications.