And other materials exposed to the atmosphere, like stainless steel welded pipe will be dirty. Influence of repair and clean-up costs of design factors, in rain erosion, there is also a correlation between artificial flushing and dirty surfaces.
Determine the effect of rainfall through the same plank directly on the atmosphere and on the Covered areas. Artificial flushing effect is achieved by artificial scrub with a sponge with soapy water for six months the right side of each strip determined intervals. The results showed that, compared with the slats placed Covered places and places not to be flushed by water erosion and manual cleaning to remove surface dust and siltation of surface conditions have a good effect. But also found that the condition of surface finish also affect the smooth surface of rough planks slats surface area is better.
So wash interval is influenced by many factors, the main factor is the aesthetic standards required. While many stainless steel pipe walls just when the windows to wash, but, in general, stainless steel pipe for external wash twice a year.