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。
应用推荐