The price of fireproof cable trays is directly related to the specifications of the cable trays, and the higher the specifications of the cable trays, the higher the price of the bridge frame. For example, if the width of the bridge is the same, the higher the height of the bridge, the higher the price. If the height of the bridge is the same, the wider the width of the bridge, and the higher the price of the bridge.
The terminal heads and expansion joints in the bending fittings of the fireproof bridge also need to be separately extracted. The expansion joint has no cover by default. If an expansion joint cover needs to be added, please note and explain. If you have any questions, you can directly consult the manufacturer of the fireproof cable tray, and there will be professional personnel to answer and guide you.
The commonly used large specifications of fire resistant cable trays include 600 * 150mm, 600 * 200mm, 800 * 150mm, 800 * 200mm, 1000 * 200mm, etc. Before laying the fireproof bridge, on-site measurements should be carried out according to the electrical construction drawings provided by the project party, and standard products and factory ordered parts should be used as much as possible.
The trays and ladders laid on fire resistant cable trays should be reasonably segmented to avoid crossing walls or building openings at the connection between the two sections.
In addition, Shandong cable tray manufacturers remind you that different fire resistance ratings of fire resistant trays represent the length of normal working time for cables inside the tray after a fire. According to the tray standards, they are divided into three levels: NI level represents time greater than or equal to 60 minutes, NII level represents time greater than or equal to 45 minutes, and NIII level represents time greater than or equal to 30 minutes. Users can choose the corresponding fire resistance rating according to the fire performance requirements of the project's fire resistant tray.
The weight determining factors of a fireproof bridge include the width, height, thickness, and density of the bridge. The wider the width, the heavier the weight. For example, a 200 * 50mm bridge is heavier than a 100 * 50 bridge, and the higher the height, the heavier the weight. For example, a 100 * 100mm bridge is heavier than a 100 * 50mm bridge, and the thicker the thickness, the heavier the weight. For example, a 200 * 100 * 1.2mm bridge is heavier than a 200 * 100 * 1.0mm bridge. If you have any further doubts or needs, please come to our website http://sfcyhotel.com Consult!