There was a intense fall in Changsha before we come home from work. And it is so terrible for us when we went to the street after work as the steel pipe like seamless steel pipe, welded pipe cannot absorb the water quickly. So there was water everywhere.
From the picture, we can see that we can get a fish farm here. Okay, it is just a joke. We can talk about the drainage system which consists various steel pipes.
First of all, the number of steel pipes for drainage system. We should set on the reliable steel pipes in each place according to the terrain. For example, we can increase the steel pipes for absorbing water if there is lower than other places.
What’s more, the size of the steel pipe for drainage system. We all know that the out diameter would be different for various types of steel pipes. We should figure out the comparable steel pipes according to the demand of the drainage system.
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