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鉆井機(jī)的鉆桿用什么材料 |
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點(diǎn)評(píng)
我不知道你是玩什么的,,鉆桿靠接,你這個(gè)深度,,壁厚夠,,接頭強(qiáng)度夠,就沒(méi)有問(wèn)題,,但未必你能買到這個(gè)材料的做鉆桿的管,,因?yàn)楣軓S不一定軋這個(gè)規(guī)格,
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