...油天然气工业 旋转钻井设备 第1部分:旋转钻柱构件英文名称:Petroleum and natural gas industries - Rotary drilling equipment - Part 1:Rotary drill stem elements 标准介绍:GB/T 22512的本部分规定了下列钻柱构件的要求:上部和下部方钻杆旋塞阀..
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...旋转钻探设备.旋转钻探螺纹联轴器的线程和量规 英文名称: Petroleum and natural gas industries - Rotary drilling equipment - Threading and gauging of rotary shouldered thread connections 页数: 8 采用标准: ..