... grade: E75,X95,G105,S135 3.Certificates : API 5DP,NS-1 4. Length: R1: ... than normal API standard tool joint suitable for drilling activities of high pumping pressure,high flow ... and high torque specially desighed for deep and super deep well drilling,directional and horizontal wells2.API ... torque value of the primary shoulder is API standard torque valueThe torque value of the ...