... Steel grade: E75,X95,G105,S135 3.Certificates : API 5DP,NS-1 4. Length: R1: 5. ... capacity increase 30% to 50% than normal API standard tool joint suitable for drilling activities of ... and super deep well drilling,directional and horizontal wells2.API Standard Tool JointItem: NC26, NC31 ,NC38, NC40, ... )The torque value of the primary shoulder is API standard torque valueThe torque value of the primary ...