GB 50084-2017 第8.0.2条
| **** | Water distribution pipes shall be hot-dip galvanized steel pipes with internal and external walls, coated steel pipes, copper pipes, or stainless steel pipes, and ordinary welded steel pipes shall not be used. |
| **** | Water distribution pipes shall be hot-dip galvanized steel pipes with internal and external walls, coated steel pipes, copper pipes, or stainless steel pipes, and ordinary welded steel pipes shall not be used. |
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