发布时间:2025-01-23 17:51:58
球墨铸铁给水管试压标准源自国家规范。试压前,管道水压试验分段长度不超过一千米。试验时,管道应满水且无压力状态浸泡,无砂浆内衬浸泡时间不少于24小时,有砂浆内衬则需延长至48小时以上。所有水压试验应在回填前进行,合格后方能回填。回填前还需检查管道接口与管身无破损及渗漏,满足此前提条件才视为合格。
我的一件衣服放在洗衣机里好多天,忘了洗,后来就有好多青色的东西,请问如何能洗掉它
2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58干部职工家庭在同一城市已购买有住房的正在装修必须退出租住公有住房吗
2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58房子四层楼我想在楼顶做防雷网我往地下打进1条三米长角铁可以吗
2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58 2025-01-23 17:51:58