管线

With regard to 17.2 mm thickness,48in pipe diameter and X70 grade pipeline,it introduced 2 kinds of combination methods for automatic welding,one is NOREAST inside welding machine root welding + PAW-2000 outside welding machine filled in and cover,the other is CRC inside welding machine root welding +CRC P260 welding machine heat welding +CRC P600 double welding torch filled in and cover.

介绍了印度&东气西输&天然气管道工程焊接技术规范，针对管径1219 mm、壁厚 17.2 mm 的X70级管线，推行了NOREAST内焊机根焊+ PAW 2000型外焊机填充盖面和CRC内焊机根焊+ CRC P260焊机热焊+ CRC P600双焊炬填充盖面两种自动焊组合方案。

This paper hereby introduces the cooling process of the common 160,000 m^3-in-capacity atmospheric LNG storage tank in China, the preconditions and matters to which attention is paid upon the cooling of tank. It also discusses some commissioning techniques needed in the cooling process, including pressure control, cooling medium supply and its flow control, process monitoring and cooling rate control, etc. The paper points out that the displacement of pipelines is easily to be overlarge and flange leakage takes place frequently in the cooling process and it gives corresponding solutions.

为此，详细介绍了国内LNG接收站常用16×10^4 立方分尺常压LNG储罐的冷却过程，分析了LNG储罐冷却前应具备的条件及注意事项，讨论了LNG储罐冷却过程中的压力控制、冷却介质供应及流量控制、冷却过程的监控及冷却速率控制等调试技术，指出了冷却过程容易出现管线位移过大、法兰泄漏等问题，并给出了相应解决方法。

Cr1MoV and Cr5Mo are three common types of pearlitic heat resistant steel and widely used for high temperature tubes in petro-chemical industry, so it is necessary to develop a set of computer aided decision-making system for safety evaluation of tubes.

20钢、12Cr1MoV和Cr5Mo是 3种常用作石化企业高温炉管材料的珠光体耐热钢，开发和应用计算机决策支持系统对高温管线进行安全评估是非常必要的。

Dissimilar metal welds between the austenitic stainless steel and Cr-Mo pearlitic heat-resistant steels are widely used in ...

国内外石油化工装置和电站的高温压力容器管线及锅炉蒸汽管道等大量使用Cr-Mo类珠光体热强钢。

The article introduces the development and application of alloy steel pipe, and also the design thought, basic requirement and object quality of physicochemic and mechanical property of X80 alloy steel based on the working condition of Second West to East Gas Pipeline Project.

简单介绍了管线钢的发展和应用，介绍了西气东输二线工况用X80钢的理化、力学性能的设计思路、基本要求以及实物质量。

In the production and management of the natural gas pipelines, the pigging are widely used to remove the condense and the gas hydrates.

在输气管线的生产运行中，广泛应用清管器清除管线中的水合物及天然气凝液。

The researches into fluid characteristics of two-phase flow during the pigging operation are beneficial to the design and operation of pipelines and upstream and downstream facilities.

对清管过程中的两相流流体特征的研究有助于管线及上下游设备的设计及操作。

The researches into fluid characteristics of twophase flow during the pigging operation are beneficial to the design and operation of pipelines and upstream and downstream facilities.

对清管过程中的两相流流体特征的研究有助于管线及上下游设备的设计及操作。

Finally, this paper relates the failure probability to breakage grade by using riskmatrix, and gives risk assessment quantitively.

最后利用风险矩阵综合分析，建立起故障概率与破坏等级的关系，对通过作业区的管线进行了定量风险评估。

Vertices, triangles, and pixels thus recirculate through the grid rather than flowing through a pipeline with stages of fixed width, and allocation of the pool of processors to each shader type can dynamically vary to respond to varying graphics load.

顶点、三角形、象素循环而不是以固定的宽度通过管线，以及为每一个着色器分配一个池来动态的响应不同的图形加载。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。