Hardrock thin wall drill rods are made to meet the standard of DCDMA, they are widely used in the wireline core drilling. 1, Size: BTW/NTW/HTW 2, Outside Diameter: BTW-56.3mm/NTW-73.3mm/HTW-91.3mm 3, Inside Diameter: BTW-48mm/NTW-64mm/HTW-81mm 4, Rod Material: 30CrMnSiA/XJY850 5, Service Life: 5000m 6, Length per Piece: 3m/1.5m
Hardrock Thin Wall Drill Rods are made per the highest quality standard, and to exact specifications using advanced machining technology.
BTW/NTW/HTW Drill Rods, 3 meters Length for diamond core drilling.
They are widely used all over the world.