The special requirement for the welding of X80 pipeline steel was described also.

还简述了X80管线钢对焊接的特殊要求。

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A new method for showing the prior austenite crystal boundary corrosion, of pipeline steel has been also supposed.

同时探索出一种新的管线钢原奥氏体晶界腐蚀方法。

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A study was made of the welding procedure for X70-L245 butt joint of pipeline steel.

针对不同强度级别的管线钢x 70和L245对接的焊接工艺进行了研究。

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With that escape hatch closed, these steel, cement and petroleum customers began shopping around for truck, barge and pipeline alternatives.

FORBES: On the Right Track

For example, Soviet pipeline builders have routinely cut corners by using lower-grade steel and shallow burial of lines, making pipes particularly vulnerable to corrosion and repeated, catastrophic accidents.

CENTERFORSECURITYPOLICY: Center For Security Policy