For alloy steel piping system, the liquid temperature shall be higher than the brittle transition temperature of the metal material.
如果是合金钢管道系统,液体温度应高于金属材料的脆性转变温度。
At present, it is an important developing trend to using pressurization of large diameter high grade steel piping in the long distance oil and natural gas transportation pipes.
目前,油气管道特别是天然气输送管道发展的一个重要趋势是采用大口径高压输送及选用高钢级管材。
Demand is strong for steel piping in the North American oil and gas industry, but regulators will study the deal to see if there are any implications for energy security.
Then you have the reactor vessel and piping which is the primary boundary which has an eight to ten inch thick reactor vessel and three to four inch thick steel piping to contain the cooling water.