- API 7/8" Class T Slim Hole Sucker Rod Coupling
- 2017-01-15 22:13
- 1)Type: FH class T coupling /SH class T coupling 2)Material: High quality Carbon steel AISI 5I403)Standard: API Spec 11B
- API 7/8" Class SM Full Size Sucker Rod Coupling
- 2017-01-15 22:13
- 1)Standard: API Spec 11B2)Basic Material: AISI 5140 (40Cr), 3)Coat Material: Ni60A Alloy Coating4)Coat Thickness: 0.01-0