标签：Impurities - 英国华人论坛

High pressure boiler tubes are often in high temperature and high pressure conditions, when using the pipe under the action of high temperature flue gas and water vapor, oxidation and corrosion will happen. Requirements of steel pipe with hi...英国华人论坛

Most people are aware that the oil in their engine lubricates many of the moving internal parts. What people often do not realize is that motor oil dampens noise, cleans, helps in diagnosis engine problems, and serves as a coolant. As import...英国华人论坛