老房子铸铁下水立管怎样切割怎样换PVC，现场视频演示一下_哔哩哔哩

Name: %E8%80%81%E6%88%BF%E5%AD%90%E9%93%B8%E9%93%81%E4%B8%8B%E6%B0%B4%E7%AB%8B%E7%AE%A1%E6%80%8E%E6%A0%B7%E5%88%87%E5%89%B2%E6%80%8E%E6%A0%B7%E6%8D%A2PVC%EF%BC%8C%E7%8E%B0%E5%9C%BA%E8%A7%86%E9%A2%91%E6%BC%94%E7%A4%BA%E4%B8%80%E4%B8%8B
Uploaded: 2025-08-15T19:38:07.648Z
Description: -