hdpe双壁波纹管壁厚,比如说300mm、500mm的管壁厚,能不能给我传个各种型号管壁厚表,急用谢谢了
2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56建筑内上下层相连通的中庭其连通部位的顶棚墙面装修材料燃烧等级需为
2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56 2025-01-21 04:50:56