AISI5140 sucker rod coupling with high quality

1)Type: FHSM coupling

2)Material: High quality Carbon steel AISI 5I40

3)Coating:Spray Material Ni60A Alloy Coating

4)Basic Hardness: HRC 16-23

5)Surface Hardness: HRC 55-62

6)Hole rate: 2%

7)Min. Hardness of the layer: 595HV0.2

8)Standard: API Spec 11B

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

 Usage: oil exploration equipment, accessories, oil sucker rod coupling

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Payment Terms : 50% deposite , delivery   against     payment by T/T.