Sucker rod couplings of Yantai Yunsheng Petroleum Machine Accessories Co.,Ltd with over 20000pcs monthly capacity, including Class SM sucker rod coupling, T 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 size of 5/8", 3/4", 7/8", 1"and 1-1/8"

API Sucker Rod Coupling,Class SM
1Standard: API Spec 11B

2Basic Material is AISI 5140
3Coat Material:Ni60A Alloy Coating

4Coat Thickness: 0.01-0.02 in
5Basic Hardness: HRC 16-23 (HRA 58-62)

6Surface hardness: HRC 55-62
7Main specification:PJ29SHSM

    1)Type:slim hole

    2)Weight:0.81kg/pc

    3)O.D.:1-13/16in

    4)I.D.:2-1/8in

    5)Length:4in (101.6mm)

8Other coupling diameter: 5/8 ", 3/4", 7/8", 1"

Moreover, Both-way Globoidal Protection Sucker Rod Coupling, and Full Size Sucker Rod Coupling with Big Chamfer are our new products, If you are intresested in any of our sucker rod couplings or have any other request, pls feel free to contact us for further information.We'll be more than pleased to give you 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.