Drain line: the hydraulic components leaked oil into the return pipe or tank.
泄油管路：将液压元件泄露的油液导入回油管或油箱。
Open the relevant valves on the oil pipe line and the water pipe line.
打开油管管路和水管管路上有关的阀门。
Oil temperature drop and oil contraction can cause gas space growing in oil pipe and line packing during hot oil pipeline shutdown and restarting.
热油管道停输后，管内油品降温收缩，管内会产生油蒸气空间，从而使管道再启动时出现启动充装过程。
This paper deals with the relationship between the fault movement and the pipe line deformation and presents some opinions as to how to design a buried oil and gas pipe line through fault area.
本文讨论了断层运动和管道变形的关系，从而对过断层区的埋地管道的设计提出了几点意见。
The oil and gas pipe line through fault or landslide area is easy to be damaged by earthquake.
油气管道通过断层和滑坡地带，容易遭受地震破坏。
Seamless steel line pipe is a kind of steel pipe without seams, which is mainly used in the places near the mouth of oil well or gas well to transmit oil or gas with high pressure.
无缝管线管主要是用于油井或气井的井口附近输送高压油、气的无焊缝钢管。
In the process of sour gas reservoir development, hydrogen sulfide usually causes corrosions and damages in oil line, casing pipe and drilling apparatus.
含硫气田在开发过程中，由于硫化氢的出现，常常会出现油管、套管、钻井设备、钻井仪器等等腐蚀和损坏问题。
This paper analysised the advantage and availableness of correlation technique to detect the leaks on buried oil pipe line, together with how to solve several key problems in detecting the leaks.
本文从理论和实验两个方面分析了相关技术在石油输送管道泄漏检测中的可行性和优越性并探讨了检漏中需要解决的几个关键问题。
Close the relevant valves on the oil pipe line and the water pipe line.
关闭相关的油管管路和水管管路上的阀门。
Use: as a single coat anticorrosive FBE coat for exterior steel pipe line for transportation of oil and gas, water and other finished products.
应用领域：主要应用于各种输油、输气、输水等钢质管道的外壁防腐。
The large oil tank group in Lanzhou, which is a part of the state key project-the western oil pipe line project, is constructed on the saturated loess stratum for the first time in China.
国家重点工程西部管道工程兰州原油末站超大型油罐群，是我国首次在高饱和度黄土地基修建的超大型储油设施。
The flared fitting is a connector in order the pipe line system, in which oil, water, gas and all kinds of corrosive materials are used as the medium.
扩口式管接头是以油、水、气和各种腐蚀性材料为介质的管路系统中的一种连接件。
In the end of 2002, the company imported a nylon fuel oil pipe production line by joint capital.
2002年底公司又合资引进了一条尼龙燃油管生产线，从事汽车用尼龙燃油管总成的加工生产。
Line pipe and line pipe steel plays the important role in safe and economy oil and gas transmitting.
为了实现安全、经济的输送，管线钢钢管起到重要的作用。
This paper made full use of machine vision's characteristics of non-contact, high efficiency and high precision, and develop an instrument for on-line measuring parameter of oil pipe thread.
本文利用机器视觉非接触式、高效、高精度的特点，开发出基于机器视觉的石油管螺纹参数在线测量系统。
This paper made full use of machine vision's characteristics of non-contact, high efficiency and high precision, and develop an instrument for on-line measuring parameter of oil pipe thread.
本文利用机器视觉非接触式、高效、高精度的特点，开发出基于机器视觉的石油管螺纹参数在线测量系统。
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