A new welding technique on down-welding has been widely used in welding of long distance pipeline.
下向焊这种焊接新工艺在国内已广泛用于长输管道的焊接。
To cope with this problem, the water needed is supplied from outside sources via long distance pipeline.
为了解决水源问题，需从较远的地区长距离输水到用水区。
It is quite often to meet with the problem of local interference in engineering design of long distance pipeline.
在长输管线工程设计中经常遇到局部干扰问题。
Sue Cuo oil pipeline is the HuLunBeir oilfield first long distance pipeline, undertakes the main oil conveying task.
苏嵯输油管道是呼伦贝尔油田第一条长距离输油管道，承担着其主要的原油输送任务。
For the total length of long distance pipeline, there is no definite stipulation in the design's stage in design standards.
在管道设计的各个阶段，长输管道的总长度在设计规范中没有明确的规定。
Internal stress of welds seam for long distance pipeline is analyzed starting with any point of circumferential stress on pipe wall.
从钢管壁上任意一点的环向应力入手，分析了长输管道焊缝的内应力。
A mathematical model of steady state gas release flow rate in long distance pipeline is given by use of computational fluid mechanics.
应用计算流体力学理论给出了长输管道稳态气体泄漏率的计算方法。
As a long distance pipeline crosses rivers or water network and swamp areas where water tables are higher, buoyancy control measures must be taken.
长输管道穿越河流或水网沼泽等地下水位较高地段，必须采取浮力控制措施。
Numerical method for computer solution are used for fluid flow in long distance pipeline, such as characteristics method, implicit difference method and so on.
液体在长输管道内不稳定流动问题可以采用各种数直解法并借助计算机来进行处理，如特征线法、隐式差分法等。
Summarizes present situation on corrosion protective coatings for long distance pipeline of TaHe oil field and characteristics of commonly used coating materials.
综述了目前塔河油田长输管道防腐层现状及常用防腐层材料的特点。
Coating material of epoxy coal tar has been prolonged in the fields of corrosion protection for long distance pipeline, metal storage tank and oil field facilities.
环氧煤沥青涂料用于长输管道、金属储罐以及油田设备防腐经久不衰。
It is represented to a few automatic welding modes commonly used among welding construction of long distance pipeline both at home and abroad and compared with them.
介绍了国内外长输管道焊接施工中常用的几种自动焊接方式，并对其进行了比较。
In long distance pipeline transportation with depressant at atmospheric temperature, depressant crude oil is subjected to long terms of pipeline flow shear inevitably.
在长距离的加剂常温输送管道中，加剂原油必然经受长时间的管流剪切。
For oil transported in long distance pipeline, injecting flow improver can improve the low-temperature flowability of crude oil and decrease the fuel and power consumptions.
在长输管道中添加流动性改进剂可以改善原油的低温流动性，降低燃料和动力消耗。
For the safety of gas transmission in long distance pipeline, the method regarding how to get the proper value of pressure drop rate for the fast block valve on pipeline is studied.
根据输气管道安全的需要，对干线快速截断阀压降速率设定值的确定方法进行了研究。
It is not only solved the problem of long distance pipeline steel relying on import, realized import substitute, and also successfully applied on pipeline project both home and abroad.
不仅解决了我国长输管线用钢长期依靠进口的问题，产品能替代进口，并在国外管线工程上得到了成功的应用。
This welding process, with continuous welding wire feeding, fast deposit speed and quality welding pass, is especially suitable for long distance pipeline with large diameter and thick wall.
全位置自动焊接技术的特点是，焊丝可以连续送进，焊丝熔敷速度快，焊接质量较高，尤其适用于大口径、厚壁管的焊接。
Besides the second long-distance pipeline, expansion of Dazhangtuo underground gas storage project and other new underground gas storage projects will be constructed as well.
建设天然气进京第二条长输管线工程、大张坨天然气地下储气库扩建工程及其他的天然气地下储气库工程。
This paper focuses on the applications of GPS to the long-distance pipeline project.
本文主要研究GPS技术在长输管线工程中的应用。
It is proved by examination that the economical and practical equipment and technics are suitable for the long distance transmission pipeline, and it has good foreground of spreading and appling.
试验证实，这是一种与长输管道自动焊配套的经济实用型成套设备，具有较好的推广应用前景。
Some valuable points are summed up in the application of GPS controlling network by assessing and analyzing the quality of the practical data in the long-distance pipeline project.
通过对具体观测成果的的质量进行评定分析，总结了长输管线工程GPS静态控制网技术设计应该注意的问题及措施。
This article is useful for the oil pipeline optimal operation and long distance gas pipeline design to some extent.
本文对热油管道的运行优化和天然气长输管道设计也具有一定的借鉴意义。
According to the model, a corresponding software has been programmed which provides a decision-making basic for optimizing transmission of long distance heated crude oil pipeline.
根据所建模型编制了相应软件，为加热原油的长距离优化输送提供了决策依据。
Aimming at the safety of welding of long-distance pipeline, this paper analyzes the hazardous substance of welding process, and puts forward the relevant precautionary measures.
针对长输管道焊接过程出现的安全问题，分析了焊接过程中的有害因素，并就相关有害因素提出了防范措施。
Fully welded ball valve is widely used in natural gas, oil, heat, chemical and thermoelectric pipeline network and other long-distance pipeline fields.
全焊接球阀广泛应用于天然气、石油、供热、化工及热电管网等长输管线领域。
It describes water replacement to clear long-distance LPG pipeline before repairing the pipeline.
叙述在长输液化气管道检修前清理原有的液化石油气所采用的水置换法。
The deterioration of corrosion of long-distance pipeline, the damages and spalling of protecting layer have imposed great threats to the reliable operation of pipeline.
长输管道腐蚀问题日趋严重，防护层存在的破损、剥离等缺陷对管道安全运行构成极大威胁。
The natural gas pipeline from Hangzhou to Huzhou is a large branch of "West-to-East gas pipeline", and the first long-distance gas pipeline in Zhejiang Provice.
杭州—湖州天然气输气管道工程是西气东输工程主要支干线之一，也是浙江省的第一条天然气长输管道。
A long distance transportation pipeline SCADA system is designed based on it.
在此基础上，实现了长输管线的SCADA系统。
A long distance transportation pipeline SCADA system is designed based on it.
在此基础上，实现了长输管线的SCADA系统。
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