Jiyuan Sanhe Zhengyuan Petroleum Machinery Co., Ltd The company owns a full range of drilling tools production lines, of which are deep-hole drilling and boring machine,11m ordinary lathe, the frequency of heat treatment production lines, spiral milling machine tools, CNC pipe threading lathes, the i... We are regularly Selling: drill collar, spiral drill collar, non-magnetic drill collar, integral heavy weight drill pipe, lifting sub, stabilizer, kelly. Member since 25 July, 2009, China - Henan
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