... assembly, inner tube head assembly, over shot, hoist plugs, drill rod, casing pipe etc. With ISO certificate & quality control. ... contact with us if you need detailed speicifations or catalog. Drill rods & Casing pipes Core barrel assembly & inner tube ... = new AE.run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Drill pipe NQ, HQ, PQ, NQTT, HQWL, T2, T6, NMLC, HMLC