Name: Railway Noise Barrier Specifications: 1m a 5m in height between the average noise reduction of the effective area covering 10 ~ 15dB (A) (125Hz ~ 40000Hz, 1/3 octave) up to 20dB (A). Generally speaking, the higher the sound barrier rail, or farther away from the sound barrier, noise, the better. Features: Mesh elegant, sophisticated production, transportation, easy installation, low cost, long life, especially for the elevated expressway and urban light rail, subway noise prevention purposes: railway noise barrier construction is mainly for the railway side of the residents create a noise-free environment. Hebei Huasheng Hardware Wire Mesh Products Co., Ltd. to provide you with. Welcome new and old customers to negotiate!