我们对女儿墙屋面旗杆的传统作法进行了改进,实践证明,这种作法工艺简单,操作方便,不占空间,外观整齐。具体作法如下。取400mm长φ60钢管,先将一端打磨光滑,在另一端加热弯曲并收径,与φ20钢管焊接,弯曲角度约为12°(便于排水,见图1),焊接处理要求不漏水。φ20钢管在滴水处切成斜口。整个制件完成后作好防腐处理。 We have improved the traditional practice of parapets on parapet walls. Practice has proved that this method is simple, easy to operate, does not occupy space, and has a neat appearance. The specific practices are as follows. Take 400mm long φ60 steel pipe, one end polished smooth, at the other end heating bending and diameter, welding with φ20 steel pipe, bending angle of about 12 ° (for drainage, see Figure 1), welding processing requirements do not leak. The φ20 steel pipe is cut obliquely at the dripping point. After the completion of the entire piece of anti-corrosion treatment.