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R25N Alat Teknik Tanah Baja Berongga Self Drilling Anchor Hex Nuts
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R38 kopling / coupler R38 kanggo ngebur poto anchor rock bolt
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Self ngebur rock bolt anchor plate kanggo tambang lan support gendheng trowongan
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JCDRILL China Tungsten Carbide Bits Bor Rig Rock Bits Self Drilling Jangkar Bit
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Rock Bolt Drilling Tunneling Jangkar Alat Tungsten Carbide Self Drilling Jangkar Bar Thread Rod Anchor Bolt
