Kiss. The first paragraph of this link is full copper and the other forms are electroplating engineering plastics. I don't know
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Because the water from the washing machine is chemical, engineering plastics are corrosive, anti-aging and rust-resistant. The plating-plating increases the corrosive resistance of metals, increases the hardness, and prevents polishing, heat resistance and surface beauty. I don't know
Install method -r
1-left - with an eye 30-32mm leak in the middle, above which a hole of 20mm can be installed
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2 - seal ring deodorant - ground leaks require 33-45mm for installation
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3-pvc tube-40-50mm generic, 75 tubes temporarily unavailable
A variety of drainage pipes of 20-38mm calibre