SINODRILLS Coring drill rods and Casings
Drill rod sizes: BWL, NWL, HWL, PWL, AWJ, BWJ, NWJ, KWJ, HWJ, RW, EW, AW, BW, NW, HW;
Casing sizes: (¡°W¡± series) RW, EW, AW, BW, NW, HW, PW, SW, UW, ZW/HWT, PWT, (Metric series)46,56,76,86,101,116,131,146,(¡°X¡± design) RX,EX,AX,BX,NX,HX,PX,SX,UX,ZX