• Corporate vision to become the pipeline industry Toyota
  • Corporate mission to enhance the quality level of Chinese manufacturing
  • Business goals domestic industry first
Thread Full Coupling

Thread Full Coupling

  • Introduction:Haihao Group can manufacture threaded coupling(full and half couling),
  • seamless stainless/carbon steel pipe couplings.
  • Email:sales@haihaopipe.com

Pipe coupling (Pipe socket) is a kind of pipe fitting to joint two pipes or fittings, and the body is like a short pipe with a socket on one end or both ends. The connection methods could be Thread.

Commanly pipe coupling is devided into two types:Full Threaded Pipe Coupling,Half Threaded Pipe Coupling.

threaded coupling

 Threaded Full Pipe Coupling ASME B16.11-Haihao Group

A Full threaded pipe coupling (pipe socket ) means a steel pipe coupling has two ends both threaded. It could be a coupling with the thread only on the two ends, also could be a coupling with thread all over the length, they are all called full pipe coupling.

Sometimes the two ends thread may be different, one end is BSP and another end is NPT, then it is like a adaptor for pipes which have different type of thread ends. When installing it , the workers should check the direction for correct match.

Threaded Full Coupling

 Size  1/8”- 12” in Class 3000 and 1/8”- 8”in Class 6000

Also available in 1/8 – 8” in 150 # and 1/8”- 4” in Class 9000 and in special lengths

 Threads  American National Standard Taper Pipe Threads

NPT (ANSI/ASME B1.20.1-1983)

Also available in other thread forms: NPTF, NPSC, NPSM, NGT,

SAE, BSPT, BSPP and in any combination.

Left hand threads available upon request.

 Specification  ASME B16.11 for Class 3000 and 6000 only
 Materials  Carbon steel:

ASTM A234 WPB, S235,P235GH,ST35.8,ST37,SS400,ST20,C20,Q235

Alloy steel:

ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP91-WP9

Stainless steel:

ASTM/ASME A403 WP 304-304L-304H-304LN-304N

ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti

ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

Low-temperature steel:


High performance carbon steel:


 Package  wooden case, pallet or as customers’ requirement

Dimensions threaded Full couplings – 1/8 to 4 – 3000,6000 LBS – ASME B16.11

Threaded Coupling

(All dimensions are in inches • Weights are based on Carbon Steel)Haihao group have a nearly 30 years pipe fittings and flanges(Threaded,Buttweld,Socket weld) manufacture experience. We can supply suitable products as per your request. Besides these standard products, we also can supply customized pipe fittings and flanges accordingly.We sincerely welcome customers domestic and abroad to visit us for cooperation and development.