Sucker rod couplings of Yantai Yunsheng Petroleume Machine Company with over 30000pcs monthly capacity, including Class SM sucker rod coupling, T sucker rod coupling, Sub sucker rod coupling, Full Size sucker rod coupling, Slim Hole sucke 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 Class SM Sucker Rod Coupling

1.Standard: API Spec 11B

2.Basic Material: AISI 5140 (40Cr),

 
3.Coat Material:Ni60A Alloy Coating

4.Coat Thickeness: 0.01-0.02 in

5.Basic Hardness: HRC 16-23 (HRA 58-62)

6.Surface hardness: HRC 55-62

7.Metal coating hardness: 595 HV0.2

8.Type:Full size/Slim Hole

9.Coupling diameter: 5/8 ", 3/4", 7/8", 1", 1-1/8"

10.Life:more than 180days

OUR NEW SPECIAL PRODUCTS
Both-way Globoidal Protection Sucker Rod Coupling
Full Size Sucker Rod Coupling with Big Chamfer
If any of our sucker rod couplings attracts you, or you have any other cooperation idea, pls feel free to contact us.Due to we're the special manufacturer, we can give you a best offer .

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.