GB 50015-2019 第3.5.3条
| Water flow velocity in water supply pipes: when nominal diameter DN≤25mm, it should not exceed 1.0m/s; for DN32–DN50, it should not exceed 1.2m/s; for DN≥65, it should not exceed 1.5m/s.
| Water flow velocity in water supply pipes: when nominal diameter DN≤25mm, it should not exceed 1.0m/s; for DN32–DN50, it should not exceed 1.2m/s; for DN≥65, it should not exceed 1.5m/s.
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