JUS K R1 120-1993 Core drilling equipment - Core barrel - Type Z - Core and extension tube《空心钻具 钻管 Z型 空心钻与伸缩管》.pdf

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JUS K R1 116-1993 Core drilling equipment - Core barrel - Type Z - Diamond core bits thick walled《空心钻具 钻管 Z型 金刚石岩心钻头，厚壁》.pdf

JUS K R1 117-1993 Core drilling equipment - Core barrel - Type Z - Core lifter case《空心钻具 钻管 Z型 提芯器机箱》.pdf

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JUS K R1 119-1993 Core drilling equipment - Core barrel - Type Z - Core lifter couplings《空心钻具 钻管 Z型 提芯器离合器》.pdf

JUS K R1 108-1989 core drilling eguipment core barrels Heads with sediment-tube threads type B《空心钻具 钻管 B类钻泥管螺丝》.pdf

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