Now install the pipe metal simply uneconomical. Metal is more expensive than polyethylene, and is much less. In addition, requires systematic maintenance connected with the shade of the outer surface and cleaning rust inside. In principle, you can perhaps not paint, but it is pregnant with fistula in the pipes, and then weld a fistula is debatable, if the thin - wall pipe.
Now install the pipe metal simply uneconomical. Metal is more expensive than polyethylene, and is much less. In addition, needs organized care associated with the colour of the outer surface and cleaning rust inside. In principle, you can perhaps not paint, but it is filled with fistula in the pipes, and if the thin - wall pipe, then weld a fistula is debatable.
