This article introduces the construction technology, facilities layout, derrick system security, quality and safety requirements.
结合工程实践对施工工艺、设施布置、井架制安、质量安全要求进行了介绍。
Derrick: the main hoist winch and a system of elevators lifts 1,250 tons of pipes and machinery through the 72.
钻塔：主起吊绞车和升降机系统可通过船底72英尺宽的开口，提升1,250吨重的管道和机械。
As a new riser handling system, the vertical riser handling system is an extensional application of successful derrick drill stern vertical handling system in drilling machines.
隔水管垂直存放系统是一种新颖的隔水管处理系统，它是钻机行业井架内钻杆垂直存放系统成功解决方法的外延应用。
The coal mine main hoisting system couldn t safe work with the vibration of the derrick (especially in starting or stopping) .
煤矿主提升系统由于井塔的振动，无法满足安全生产的要求（尤其是在启动、停车阶段）。
The application and effect of US Derrick overlapping high frequency vibrating fine screen in the transformation for capacity expansion of System 321 in Ekou Iron Concentrator are described.
介绍了美国德瑞克重叠式高频振动细筛在峨口铁矿选矿厂321系统扩能改造中的应用和效果。
The application and effect of US Derrick overlapping high frequency vibrating fine screen in the transformation for capacity expansion of System 321 in Ekou Iron Concentrator are described.
介绍了美国德瑞克重叠式高频振动细筛在峨口铁矿选矿厂321系统扩能改造中的应用和效果。
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