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 04:48:29 2025-01-21 04:48:29 2025-01-21 04:48:29 2025-01-21 04:48:29 2025-01-21 04:48:29 2025-01-21 04:48:29 2025-01-21 04:48:29 2025-01-21 04:48:29我房间里出现了一道缝建筑上说是伸缩缝房间内允许有建筑伸缩缝吗
2025-01-21 04:48:29 2025-01-21 04:48:29