API 11b Class T and Class Sm Sucker Rod Coupling Dongying Zhaoxin Industry and Trade Co, Ltd. After-sales Service:YesWarranty:1 YearManufacturing Process:CNC MillingSurface Treatment:GalvanizedOperation Pressure:Atmospheric PressureMaterial:Alloy Base Info Model NO.:5,8", 3,4", 7,8", 1", 1-1,8"Transport Package:Wooden CaseSpecification:5,8", 3,4", 7,8", 1", 1-1,8"Trademark:ZXOrigin:China Description Overview Product DescriptionProduct Parameters Packaging & Shipping Pre:Esp Clamps Cast Steel Cross Coupling Cable Protector Next:Jieda LW450 Model Horizontal Type Industrial Decanter Centrifuge