煤礦巖心管
煤(mei)礦巖(yan)心(xin)(xin)管(guan)(guan)(guan)是地(di)質(zhi)鉆(zhan)探作(zuo)業(ye)中(zhong)的核心(xin)(xin)工程(cheng)(cheng)材(cai)料，主要用(yong)于(yu)(yu)鉆(zhan)探過(guo)程(cheng)(cheng)中(zhong)容納和保護巖(yan)礦心(xin)(xin)樣本(ben)。其材(cai)質(zhi)多采(cai)用(yong)DZ40合金鋼或無縫鋼管(guan)(guan)(guan)制造，外徑規格(ge)涵(han)蓋(gai)25-168毫(hao)米(mi)，壁厚3.5-6毫(hao)米(mi)，結構包(bao)含單層(ceng)(ceng)管(guan)(guan)(guan)和適用(yong)于(yu)(yu)破碎地(di)層(ceng)(ceng)的雙層(ceng)(ceng)管(guan)(guan)(guan)。在操作(zuo)層(ceng)(ceng)面需遵循(xun)嚴禁吊打巖(yan)心(xin)(xin)管(guan)(guan)(guan)、控制回次進尺等規范，以保障巖(yan)心(xin)(xin)完整(zheng)性與采(cai)取率。河南濱遠機械(xie)通過(guo)
