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0引言在市场经济的今天,细节已经决定了产品的成败,城轨车辆市场也同样如此,业主不仅要求城轨车辆有着卓越的性能,也要求它具有靓丽的外表,上到油漆的光泽度,下到每一个螺孔的细节都追求完美。而城轨车辆的端墙因为设计的需要,有许多尺寸大小不一的孔洞,这些孔洞有的是内装有攻螺套的螺孔,也有的是不带螺纹的安装孔、安装槽,以今年新进项目马来西亚安邦线端墙为例,从直径4 mm
0 Introduction Today in the market economy, the details have decided the success of the product, the same is true of the urban rail vehicle market, the owner not only requires excellent performance urban vehicles, but also requires it to have a beautiful appearance, the paint on the gloss, The details of each screw hole under the pursuit of perfection. The end of the urban rail vehicles because of the design needs, there are many different sizes of holes, these holes are equipped with tapping screw holes, some are non-threaded mounting holes, mounting slots, this year’s new project An Ampang Malaysia Endwall, for example, from a diameter of 4 mm