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1 - 9tower
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1 - 9tower
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≥10tower
岩心管
取岩芯 钻孔直径:42,,50,63(mm) 外形尺寸:搁置(mm)
岩心钻探中连接在钻头上部用以容纳和保护岩心的一段管材。钻进时,它还起导正钻具的作用。普通的岩心管仅只是一根两端有丝扣的无缝钢管,直径略比钻头直径小一点(小2~4毫米)。单根的岩心管长3~4 5米,为防止钻孔弯曲可将几根岩心管连接起来,组成长粗径钻具。在特殊地层(如松散、破碎地层)钻进时常采用特殊的岩心管,如双层岩心管。
address | Unified Social Credit Code | ||
---|---|---|---|
organization code | registered capital | ||
business term | 1970-01-01 | Business status | |
company type | establish date | 1970-01-01 | |
legal representative | register authority | ||
business scope |
Middling coal Industry and Mining Materials Group Co., Ltd
mobile phone:400-086-0537
phone:086-400-0860537
Address: No. 11 Kaiyuan Road North, High tech Zone, Jining City, Shandong Province