Full Size Class SM coupling : 1.up to API 11B 2.in high quality but low price 3.small order will be accepted

All of our couplings including API Class T Sucker Rod Couplings, API

spray metal sucker rod couplings and API Change-Over Sucker Rod Couplings are made full in line with API SPEC 11B, with the size range of 5/8", 3/4", 7/8", 1", 1-1/8".

 5/8 " FS API Class SM coupling

1-Type: SM  FS coupling

2-Coupling diameter: 5/8 "

   -O.D: 1-1/2" [38.1mm]

   -I.D: 15/16" [23.81mm]

   -Length: 4"[101.6mm]

3-Weight: 0.56 KG/Pcs

4Material: AISI 5I40

5-Spray Material Ni60A Alloy Coating

6-Basic Hardness: HRC 16-23

7-Surface Hardness: HRC 55-62

8-Hole rate: 2%

9-Min. Hardness of the layer: 595HV0.2

10-Coat Thickness(in): 0.01in ~ 0.02in

11-Operating Temperature: -1000~400

12-Life: > 180 days

13-Standard: API Spec 11B

14-Package: wooden case

15-Payment Terms: T/T

 Our New Products

1) Full Size SM Coupling with great bevel edge

2) Two-way Cambered Protection SM Coupling 

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.

PETROLEUM MACHINERY PART, API Class SM 5/8"FS couplings