Api Spec 11b Sucker Rod Couplings

Yantai Yunsheng Petroleum Machine Accessories Co,. Ltd. founded in 1997, now is one of professional manufacture producing API SPEC 11B Sucker Rod Couplings, including Class T & SM, Class UHS, Full size and Slim hole. We own the advanced technology and alloy coat abrasion-proof sucker rod joint reaches the top level in the world.
1) Material: AISI 5140
2) Standard: API Spec 11B

3) Main specification:
OD:1-13/16" (46.04mm)
ID: 1-3/16"(30.16mm)
Length: 4" (101.6mm)
Weight: 0.74kg
4) Other Size: 5/8''; 3/4'';1''; 1-1/8''
5) Smoothness: 3.1*10-3
6) Coat Thickness(in): 0.01in ~ 0.02in
7) Basic hardness: HRC 16-23
8) Surface Hardness: HRC 55-62
9) Bonding Strength(Mpa): 484
10) Hole rate: <2%
11) Min. Hardness of the layer: 595HV0.2
12) Min. Tensile Strength: 655 Mpa
13) Operating Temperature: -1000~400 Centigrade Temperature
14) Life: > 180 days
15) Package: wooden case, 1000pcs each case.
16) Usage: oil exploration equipment, accessories, oil sucker rod coupling