制造石油、天然气集输和长输管或煤炭、建材浆体输送管等用的中厚板和带卷,称为管线用钢(steel for pipeline)一般采用中厚板制成厚壁直缝焊管,而板卷用于生产直缝电阻焊管或埋弧螺旋焊管管线钢按金相组织形态分类至今大致有以下四种:
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low alIoy steel for pipeline 管线用低合金钢
low alloy steel for pipeline 管线用低合金钢
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。
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。
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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