Casing running tools internal and external Casing runnning tool(External) clamps on the coupling's outside by internal teeth of slip. Making the casing string rotating and circulating the drilling fluid simultaneously. It improved the success rate, safety and efficiency in running casings operation.
Top drive saver sub Available OD: 187mm(7-23/64"), 197mm(7-3/4"), 219mm(8-5/8") Available ID: 57.2mm(2-1/4"), 71.4mm(2-13/16") Connection: 6-5/8REG x NC46, 7-5/8REG x NC50
