API 2 3/8 REG wai luawai wili paipu 1.5 mika me ka mānoanoa 5mm DTH drill rod mea hana

DTH drill paipu pāʻani koʻikoʻi koʻikoʻi i nā DTH wili a pau, me ka nānā ʻole i ke ʻano o ka pōhaku, ka hohonu o ka lua a i ʻole ka drill rig. , alanui kiʻekiʻe, alahao a pēlā aku.Hiʻohiʻona: 1.Pipe kino: anu huki seamless paipu.No laila, loaʻa i ka paipu ka nui kūpono, ka mea kikowaena maikaʻi.2.Thread connector : Heat and Nitrogen treatment , no laila ʻoi aku ka lōʻihi o ka paipu a maʻalahi hoʻi e hoʻouka a wehe.3.Friction welding .