1.HW Drill Pipe by weiling 2.Internal Upset Transit ... top three place global sale 1.OD: 2 3/8", 2 7/8", 3 1/2", 4" ,4 1/2", ... 4. Length: R1: 5.3-7.9m R2: 8.5-11.5m R3:11.5-14.5m 5.Internal ... ARNCO 100XT , 200XT, & 300XT , BOTN3000 , ARMACOR MProduct ProcessSpecial Feature Ⅰ HW Drill Pipe by welding—OD 3-1/2“to 5 ... NC38, NC40, NC46, NC50, 5 1/2FHOD: 3 3/8 ~ 7 1/2 inchLPC: 3~5 inchPrimary Shoulder Torque:6875 ...