Product Name: HDD Drill Rod (Friction welding) Model NO.: 73(2 7/8"), 89(3 1/2"), 127(5"), 140(5 1/2") Condition: New Certification: ISO9001: 2000 Type: Trenchless Series Size: 73(2 7/8"),89(3 1/2"),127(5"),140(5 1/2") Trademark: CROWN Transport Package: Cartons Origin: China Product Description The specification list HDD drill pipe (Friction welding)We can provide users with the supporting drill pipe of various specifications, thread forms and steel grades for the drilling machine.