发布时间:2025-02-01 04:15:22
四川高德特为你解答:
钢套管尺寸为:
排水管穿梁、剪力墙时套管比管道大1号;给水管穿建建筑基础、梁、楼板时套管比管道大2号;保温管道的套管比母管大4号或者套管比保温层厚度大1号的管径。
尼康afs dx 尼克尔 18200mm f473556g ed vr ii主要性能
2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22 2025-02-01 04:15:22