How could choose steel pipe for kitchen water drainage

It would be a horrible thing once you figure out that your kitchen’s steel pipe is blocked and you cannot drain the impurity out. Yes! It happened for me this weekend and now I’m thinking about the choosing of steel pipe from seamless steel pipe to welded steel pipe for my kitchen.

Seamless steel pipe, for example, SMLS Steel Pipe DIN 17175 has two categories: Cold Finished Seamless Steel Tube and Pipe:Φ8~114.3*1~20mm; and Hot-rolled Steel Tube and Pipe:Φ114.3~720*5~120mm. From this, we would find that it may not so good when it applied in impurity’s drainage.

Under this situation, ERW steel pipe and SSAW steel pipe, with huge out diameter, would be a nice choice for the impurity water’s drainage. As it would not be blocked easily with the huge out diameter.