Product features

    1. The protective wall (door) of the equipment hole is set in the opening of the hole, and opens to the front line (railway track).

    2. The door is normally closed, and the key is opened when repairing.

    Scope: equipment room for railway tunnel.

    Type and performance metrics.

    1. Fire resistance function: anti-explosion wall (door) has fire-resistant integrity > 3h.

    2. Anti-explosion function: anti-explosion wall (door) has anti-explosion function, and the impact of explosion impact is 200KPa.

    3. Sealing function: anti-knock door sealing performance requirements: when the pressure difference between the inside and outside of the door is 10Pa, the air permeability of each meter gap is less than or equal to 6.0 cubic meters /m. H (GB13686 Ⅴ level)

    4. Door opening Angle: greater than or equal to 90 degrees.

Protective wall section

    1. The main tendon of the skeleton is galvanized rectangular tube, and the thickness of zinc layer is 200g/m2.

    2. The anti-knock board adopts double-layer galvanized sheet, with fiber and cement inside.

    3. The fire prevention board adopts the high quality perlite, which has good fireproof and insulating effect.

    4. The ribs are bent with high quality galvanized sheet.