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。
The ore body in main mining area of Yanqianshan iron mine has a structural character of easy-caving due to a dense joint distribution and a high Angle and thick ore-body.
眼前山铁矿主采区为节理裂隙比较发育的急倾斜厚大矿体，矿岩具有良好的可冒性。
So the circumjacent welding should be applied at this spot and another join symmetrical to it, all sides of the place at which Angle iron join are welded around with the main beam.
因此应该在该位置以及与之对称的另一联接点处都应采用周边焊，使角钢连接处的各边全部焊接，然后再与大梁周边焊接。
So the circumjacent welding should be applied at this spot and another join symmetrical to it, all sides of the place at which Angle iron join are welded around with the main beam.
因此应该在该位置以及与之对称的另一联接点处都应采用周边焊，使角钢连接处的各边全部焊接，然后再与大梁周边焊接。
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