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Coal drill tail (hollow
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The diameter of coal drill bits is generally between 12-22mm. They are mostly made of high-quality alloy steel and are tempered by vacuum heat treatment. They are mainly used for drilling coal seams in underground coal mines, and are used with coal electric drills and pneumatic drilling rigs to provide support for gas drainage, anchor support and other operations.
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Shanxi Guangkai Machinery Technology Co., Ltd. was established in 2007. The company covers an area of 135 acres and has a standard factory building of 25,000 square meters. The company has 230 employees, 30 professional and technical personnel, and 11 senior management personnel.
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Baiquan Industrial Park in the Suburb of Yangquan City, Shanxi Province
