API 7-1 6 Inch 6-5/8 REG NC56 Hexagonal Rotary Kelly 3-1/2 ID For Oil Gas Drilling
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COMPANY PROFILE We(SWS) are specialized in cementing tools drilling tools, and casing accessories, engaging in the development, manufacturing, sales and service. Advanced downhole tool manufacturing technology is used to provide products that exceed ......
Jiangsu Service Petroleum Technology Co., Ltd
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