管子外径(mm)Diameter pipeØ50Ø60Ø76Ø89Ø102Ø114Ø127接头外径(mm)Joint diameterØ50Ø60Ø76Ø89Ø102Ø114Ø127管子壁厚(mm)Wall thickness66689.198.569.19钻杆长度(mm)Length of drill rod1000～20001000～30001500～30001500～60003000～76001500～76005000-9600应用于矿山爆破、水井钻孔，地热井钻孔，管棚支护，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 water well,drilling geothermal wells,pipe-roof Protection,coal and non-ferrous metal mining projects into radial hole drilling work.
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