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1) Materials: AISI 5140, ASTM 1045
2) Standard: API Spec 11B
3) Class: T& SM , Sub Coupling
4) Main specification: 5/8", 3/4", 7/8", 1", 1-1/8"
1) Materials: AISI 5140, ASTM 1045
2) Standard: API Spec 11B
3) Class: T& SM , Sub Coupling
4) Main specification: 5/8", 3/4", 7/8", 1", 1-1/8"
sucker rod coupling
