our company:Yunsheng is the manufacturer offering API sucker rod coupling in Shandong China. All the rod coupling produced by API 11 B standard.These sucker rod coupling are very cost effective,including class SM sucker rod coupling, class T sucker rod coupling, Sub sucker rod coupling, Full Size coupling, Slim Hole coupling. They are available in 5/8, 3/4, 7/8, 1 and 1-1/8. Manufactured with high quality Carbon steel AISI 5I40 /4135 .  If you have any interest in our sucker rod coupling, please feel free to contact us for further information! And we can also provide API sucker rod for you without any extra profit from our brotherhood company.

Based on the spray metal sucker rod coupling, sucker rod coupling with big chamfer increases a big chamfer at both ends, greatly reducing the contact area with the pipeline, and more slowing down the wear. So it can not only protect itself better, but also the pipeline. 

API Sucker Rod Coupling with Big Chamfer

1) Standard: API Spec 11B

2) Basic Material: AISI5140(high quality carbon steel )

3)Coat thickness:0.010in-0.020in

4) Coat Material:Ni60A Alloy Coating

5)Type: full size and slim hole

6) Coupling diameter :5/8"; 3/4"; 7/8"; 1"; 1-1/8"

7)New product: Two-way globoidal protection sucker rod coupling;

                       Full size sucker rod coupling with big chamfer,

Moreover, Yunsheng sucker rod couplings with over 30000pcs monthly capacity of Class T sucker rod coupling, also including Class SM sucker rod coupling, Sub sucker rod coupling, Full Size sucker rod coupling, Slim Hole sucker rod coupling, all of them are up to API 11 B and available in all sizes.

If you are interested in any of our sucker rod couplings or have any request, pls feel free to contact us for further information.We'll assure you of our best service all the time.

If you are interested in our production, please let us have your specific enquiry, and our quotation will be forwarded without delay. Business between us will be concluded on the basis of shipping quality and reasonable price, and necessary certificates in regard to the quality and quantity of shipment will, of course, be provided.

We look forward to your early reply with much interest.

Yantai Yunsheng Petroleum Machine Accessories Co. Ltd., founded in 2005, is a professional manufacturer of API Spec 11B Sucker Rod Couplings, including Spray Metal coupling, class T coupling, Sub OD coupling, with various type of Full size, Slim Hole, Over Size, with Big Chamfer, with Wrench Flat, with Bidirectional Cambered Surface Protection, etc., and the thread size are available at 5/8", 3/4", 7/8", 1", 1-1/8".  Owning world top level equipments and technicians, the monthly production capacity is more than 20,000pcs.  All of our couplings are excellent in Quality and reasonable in Price, and the production & inspection are being done fully in accordance with API Spec11B standard.