China manufacturer! API 11 B alloy steel slim hole sub-coupling

Specifications

api 11b alloy steel sub-coupling
1.Std Ref: API 11B
2.Type:reducing coupling
3.Technics:hot rolling
4.Feature:good sealing

API 11B alloy steel slim hole 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

 

 

Size (in)	3/4-7/8	7/8-1
Coupling O.D (+0.13,-0.25) (mm)	41.30	50.80
Min size Thread D.(in)	11/16	13/16
Max size Thread D.(in)	13/16	13/8
Lengh (+1.57,0.00) (mm)	101.6	114.3
Hardness(HRA)	56-62

 

 

 Product picture

 

 

 

 

 

 

 

 

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.