The American Petroleum Institute (API) provides standards for pipe suitable for use in both the oil and natural gas industries (figure 4).
美国石油协会对适合应用于石油和天然气行业的管材制定了标准(如图4)。
It introduces characteristic and kinds of line pipe for petroleum and natural gas transmission.
简要介绍了石油天然气输送用管线钢管的种类及其特点。
For on-line calibration system of flowmeter, the working fluid flow is from the petroleum pipe line itself.
体积管工作时的液流，对于流量计在线检定系统，是来自输油管线本身。
This article introduces the using condition and developing trend of common standards of steel pipe used for petroleum and nature gas transmission in China, Euramerica and Russia.
介绍了目前中国、欧美和俄罗斯常用油气输送钢管标准的使用情况及其发展趋势。
Used for protecting the natural gas and petroleum pipe from corrosion.
用于石油天然气及城市燃气、热、排水输送管道的补口防腐。
The double lift pipe catalytic cracking process and apparatus for modifying inferior petrol in petroleum processing aims at reducing the olefin content and sulfur content in petrol greatly.
本发明公开了石油加工过程的一种改质劣质汽油的双提升管催化裂化方法 及装置，主要用于解决采用现有技术所生产的汽油烯烃含量或硫含量下降幅度 不大的问题。
The machine is suitable for companies who worked on pipe fitting forming and pipe installation in power plant, petroleum industry, chemical industry, shipbuilding industry, etc.
本机床适用于电站、石油、化工、造船等行业中管件制造、管道安装单位使用；
The machine is suitable for companies who worked on pipe fitting forming and pipe installation in power plant, petroleum industry, chemical industry, shipbuilding industry, etc.
本机床适用于电站、石油、化工、造船等行业中管件制造、管道安装单位使用；
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