High quality! API 11B full size sub-coupling

Specifications

API 11B full size sub-coupling

Our factory can manufacture couplings, including sucker rod coupling, sub-coupling, API 5CT tubing and casing coupling. Sucker rod coupling and sub-coupling are designed in accordance with API Spec 11B, the material is high quality alloy steel. Normally, there are 2 wrench flats on the outside diameter. Class T coupling hardness is HRA56-62 after heat treatment, possesing better anti-corrosion property and abrasion-proof property.

Sucker rod coupling is used for connecting the same size of sucker rods. Sub-coupling is used for connecting the two sizes of sucker rods or polished rod to a sucker rod string.

Technical parameters

Product photos

RFQ for your information

1. Q : are you a factory or a trade company?

   A : Yes,we are a specilized petroleum machinery products factory for 12 years

2. Q:Where are your factory located in?how can i reach it?

    A: our factory is located in PuYang City,HeNan province,you can take the High-speed

rail from Beijing or Shanghai , or by plane to Zhengzhou city.

3. Q: do you have API 5CT certification or other certification?

    A: we have API 5CT &API 11b certification ,and ISO 9001 quality control certification

4.Q:for the quality control,how do your factroy control?

   A: Firstly,all our seamless tubes,such as J55,K55,N80,L80,P110 are from china biggest

seamless factory,so Tensile Strength & Yield Strength can be assured.

  A: Secondly,each procedure strictly controlled,and the threads are conntrolled by lathe

and import molding cutter.