... ;RW,EW,AW,BW,NW,HW drill rod;RX,EX,BX,NX,HX,PX drill rod Our drill rod with high quality alloy ... steel, and heat-treated. Can supply different drill rods to meet different Core bits. Size Available:"Q" Series: BQ ... sizes.We produce a wide range of drilling tool including drill rod, wire line core barrel (AQ-PQ) and assemblies, synthetic ...