DIN 4753-5-2011 饮用水所用热水器,水加热装置和贮水式热水器.第5部分:采用天然橡胶或合成橡胶水槽衬里作触水面的防腐保护
Water heaters, water heating installations and storage water heaters for drinking water - Part 5: Corrosion protection on the water side by means of natural or synthetic rubber tank linings