Available in all standard drilling sizes: BTW, NTW, HTW.
Heat treated and quenching treatment of drill rods.
High straightness and long service time.
BTW/NTW/HTW Thin Wall Drill Rods
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