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DTH Hammer Drilling Overburden Symmetric Casing Concentric Pilot Bit and Ring Bit with Casing Shoe The Concentric/Symmetric casing system product line includes the enhanced system with striking faces and extracting highly resistant.
Bestlink Factory
Xiamen Bestlink Factory Co., Ltd is committed to provide the best drilling and cutting machine, tools and accessories products in marble and granite stone quarrying, as well as in civil engineering application, especial demolition project. it is now a leading manufacturer of cutting and drilling equipment for the extraction of marble, granite and ornamental stones in china.
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