For small diameter pipeline it is more difficult than for large diameter pipeline.
对于小管径管道，其通球难度要大于大管径管道。
Particularly, the drying technique of using dry air for large diameter pipeline was applied for the first time in our country.
尤其干空气干燥技术，开创了我国大口径输气管道干燥施工的先例。
But the pipeline thrust of large diameter is usually very big. The design form of anchors will influence the fabrication cost of the project and safe operation directly.
但是大直径管道推力通常很大，固定墩的设计形式，将直接影响到工程造价和安全运行。
X70 steel coils of acicular ferrite microstructure for large diameter pipes were researched and developed at Baosteel. The products have been used in West-East Gas Pipeline Project.
宝山钢铁股份有限公司开发研制的针状铁素体型X70大口径输气管线用板卷钢已应用于西气东输管线工程。
This method can solve the practical problem of laying large diameter and thin wall pipeline in shallow water.
该方法能够解决浅水大直径薄壁管道的铺设难题。
Through the analysis of Conventional Pipelaying Barge, this paper presents a new method and analyses its principle for laying large diameter and thin wall pipeline in shallow water.
通过对常规铺管船的分析，提出浅水大直径薄壁管道铺设方法及作业原理。
Internal coating used in high pressure, large diameter and long distance gas pipeline has two main functions, one of them is anti corrosion and the other is drag reduction.
高压、大口径、长输天然气管道采用内涂层主要具有两大功能，一是防腐蚀，二是减阻。
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。
The design of directly buried heating pipeline with large diameter is summed up, and its operation result is better.
总结了大管径直埋供热管道的设计，运行效果良好。
There is obvious advantage of the ultrasonic flow meter for the metering on the large diameter gas pipeline.
超声波流量计在大管径天然气计量中具有突出的优点。
Main points in design and construction concerning the large diameter nodular cast iron pipeline are described by means of Taiyuan water supply engineering from the Huanghe River.
介绍了大口径球墨铸铁管的主要性能特点，并通过黄河水源太原市城市给水工程，就大口径球墨铸铁管在设计与施工中的要点进行了论。
Shaanxi-Beijing pipeline is the first long-distance, large-diameter, high-pressure natural gas pipeline in China.
陕京管道是我国第一条长距离、大口径的高压天然气管道。
Shaanxi-Beijing pipeline is the first long-distance, large-diameter, high-pressure natural gas pipeline in China.
陕京管道是我国第一条长距离、大口径的高压天然气管道。
应用推荐