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From
Yantai,
Shandong,
China
From
Yantai,
Shandong,
China
API Class SM sucker rod coupling
1)Material: Seamless Alloy Steel 40Cr (AISI 5140)
2)Standard: API Spec 11B
3)Size: 5/8¿ò; 3/4¿ò; 7/8¿ò; 1¿ò; 1-1/8¿ò
4)Type: Full size and Slim Hole
5)Smoothness: 3.1í-10-3
6)Coat Thickness(in): 0.01in ~ 0.02in
7)Basic hardness: HRC 16-23
8)Surface Hardness: HRA 58-62
9)Intergrate intension(Mpa): 484
10)Hole rate: <2%
11)Min. Hardness of the layer: 595HV0.2
13)Min. Tensile Strength: 655 Mpa
14)Operating Temperature: -1000~400íµ
15)Life: > 180 days.
