We are the directly manufacturer.The production have got good reputation for its high quality and reasonable price

   Our company ,founded in 1997, presently is one of biggest enterprises producing double protection sucker rod joint inside China. It is located in Laishan Shengquan Industrial Park,beautiful seashore city-Yantai, to north neighbouring Yantai Port, to south next to Yantai Airport, with beautiful scenery, comfortable climate and convinent traffic. Furthermore, our company has fixed assets RMB 10,000,000.00 yuan, 150 employees, among them there are 26 engineers. It covers 30000 square metres, and construction area is 15000 square metres.

Our company owns the advanced technology, especially about the alloy coat abrasion-proof sucker rod joint is on top level of the world. The products earned the good reputation from domestic clients such as Shengli Oil Field and Daqing Oil Field, also having sold into the markets of Europe, Southeast Asia and Middle East. Moreover, our company past the attestation of ISO9001:2000 and API.

    Based on the spray metal, with big chamfer increases a big chamfer at both ends, greatly reducing the contact area with the pipeline, but also slowing down the wear. So it can not only protect itself better, but also the pipeline. So that the life of the coupling and pipeline are significantly prolonged, and the operating costs of oil reduced, oil production increased.

API Sucker Rod Coupling with Big Chamfer

1)Standard: API Spec 11B      

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

3)Coat Material: Ni60A Alloy Coating                         

4)Coat Thickness: 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

9)Hole rate: 2%

10)Smoothness: 3.1*10-3

11)Type: Full size/Slim Hole

12)Coupling diameter: 5/8 ", 3/4", 7/8", 1", 1-1/8"

13)Life: 180days