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Help CenterChina Manufacturer! API 11 B Alloy Steel Slim Hole Sub-coupling
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Specifications
api 11b alloy steel sub-coupling1.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.
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