Main mate rial for installing: all kinds of channel steel Angle iron and plate iron.
安装主要材料:各种型号的槽钢、角铁及铁板。
Main material for installing: all kinds of channel steel, Angle iron and plate iron.
安装主要材料:各种型号的槽钢、角铁及铁板。
Drafting principle and main contents of trade standard of HR Angle for iron tower have been introduced briefly. Some problems related to standard revision have been discussed.
简要介绍了铁塔用热轧角钢行业标准的制定原则和主要内容,对修订标准时涉及的有关问题进行了解释。
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