Yantai Yunsheng supply API 11B 7/8" Full Size class SM sucker rod coupling

Features & Specification of the Product
Materials  AISI 5140
Size  7/8 Slim Hole Spray Metal Coupling
  O.D.(IN): 1 13/16
 I.D. (IN): 1 3/16
 Length(IN): 4
 Weight(kg): 0.74
Accessories  Yunsheng Catalogue.pdf   Yunsheng Couplings.pdf
Product List-Sucker Rod Couplings.xls

Paramater of coupling perfomance  

  Smoothness:  3.1×10-3
  Coat Thickness(in): 0.01in ~ 0.02in
  Basic hardness: HRC 16-23
  Surface Hardness: HRC 50-65
  Intergrate intension(Mpa): 484
  Hole rate: 2%
  Min. Hardness of the layer: 595HV0.2
  Min. Bongding stength: 655 Mpa
  Operating Temperature: -1000~400
  Life: > 180 days
Packing Wooden Case, 1000pcs each case (customered logo), with 3 layer.
Wooden Case Inner Size 1180×690×330mm
Delivery Period Within 15-20 days upon our receipt of buyers 50%T/T PREPAYMENT for 3000 pcs.
Payment  50% T/T deposit in advance, the balance paid against the B/L Copy
Conveyance 20 container 30000 pieces
 40 HQ container 45000 pieces
Unit Price: FOB Qingdao/Tianjin USD7.5 (need our futher discussion)
Minimum Order quantity: 3000PCS

Sizes of Other sucker rod couplings: 
,

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.