滾(gun)(gun)刀(dao)(dao)鉆(zhan)(zhan)頭(tou)是目前世界上(shang)各(ge)類大口徑工(gong)(gong)程井施工(gong)(gong)中(zhong)對付各(ge)種(zhong)堅硬(ying)巖(yan)石(shi)地層(ceng)、卵礫(li)石(shi)層(ceng)、孤石(shi)層(ceng)，較為常用(yong)、較為有(you)(you)效的(de)工(gong)(gong)具(ju)(ju)。滾(gun)(gun)刀(dao)(dao)具(ju)(ju)有(you)(you)刀(dao)(dao)齒(chi)(chi)耐(nai)磨性(xing)強，軸(zhou)承(cheng)壽命長，承(cheng)壓能力(li)大等(deng)優(you)點，加上(shang)鉆(zhan)(zhan)頭(tou)優(you)異(yi)的(de)穩定性(xing)保徑設(she)計、滾(gun)(gun)刀(dao)(dao)布(bu)局設(she)計及水力(li)學設(she)計，使得鉆(zhan)(zhan)頭(tou)經(jing)久耐(nai)用(yong)，可(ke)靠性(xing)強，暢銷(xiao)海內外。焊齒(chi)(chi)滾(gun)(gun)刀(dao)(dao)鉆(zhan)(zhan)頭(tou)適(shi)用(yong)于(yu)40Mpa以下各(ge)類巖(yan)石(shi)，鑲齒(chi)(chi)滾(gun)(gun)刀(dao)(dao)鉆(zhan)(zhan)頭(tou)適(shi)用(yong)于(yu)30Mpa以上(shang)各(ge)類巖(yan)石(shi)。