Special Customized Bridge Support

Fire-resistant bridge beamSpraying a fire-retardant paint on the surface of the ordinary bridgeway to provide fire prevention and retardant effects! In fact, the bridgeway itself won't catch fire; it's only the cables that could potentially ignite. The fire-retardant paint's principle of fire prevention and retardant action

Fire-resistant bridge supports have protective thicknesses in accordance with JB/T 10216-2000 "Electrical Control and Distribution Equipment."Cable trayTable 10 specifies that electroplating should be greater than 12μm, hot-dip greater than 65μm, powder coating greater than 50μm, and fire-resistant greater than 500μm, all of which can be measured by a thickness gauge.

Flame-retardant fire-resistant ladder bridge main parameters

Fire-retardant paint

Appearance: Dark gray

Uniformly thick fluid, free of lumps.

Surface dry time: 2 hours.

Bond Strength: 0.78 MPa

Seismic Resistance: The coating on the bending L/200 layer does not peel or flake off.

Flexural resistance: Coating L/100 deflection without peeling or flaking off.

Fire resistance: The coating shows no change after being soaked in tap water for over 24 hours.

Acid Resistance: Coating remains unchanged after soaking in 3% HCL for over 24 hours.

Alkali Resistance: Coating remains unchanged after immersion in 3% Ca(OH)2 solution for over 24 hours.

Salt Resistance: Immerse in 3% NaCl solution for over 24 hours, no coating change observed.

Freezing resistance: 15 times

Refer to the following for different fire-resistant coating thicknesses.

Fire resistance limits: 0.5, 1, 1.5, 2, 2.5

Coating Thickness mm 0.4-0.6 0.8-1.0 1.4-1.6 1.8-2.0 2.4-2.6

Inorganic refractory board

Fire resistance - Grade A

Thermal Conductivity (W/M, K) ≤ 0.5

Tensile Strength (Mpa) ≥ 15

Compressive Strength (Mpa) ≥ 45

Bend Resistance Strength (Mpa) ≥ 35

Impact Strength (Mpa) ≥ 2.0