管子外径(mm)Diameter pipeØ50Ø60Ø76Ø89Ø102Ø114Ø127接头外径(mm)Joint diameterØ50(Ø54)Ø60(Ø68)Ø76(Ø105)Ø89(Ø127)Ø102(Ø127)Ø114(Ø127)Ø127(Ø168)管子壁厚(mm)Wall thickness66689.198.569.19钻杆长度(mm)Length of drill rod1000～20001000～30001500～30001500～96003000～96001500～96005000-9600应用于非开挖施工，矿山爆破、水井钻孔，地热井钻孔，管棚支护，锚固钻孔煤炭及有色金属采矿工程等径向成孔的钻孔工程。Down-the-hole drilling pipe widely used in mine blasting；drilling the Geothermal；drilling the water well；drilling geothermal wells；pipe-roof Protection,coal and non-ferrous metal mining projects into radial hole drilling work.