Conventional fire resistance time of metal access panel.

Conventional fire resistance time of metal manhole The fire-resistant time of galvanized sheet depends on its fire-resistant grade and specific test conditions.

Generally speaking, the fire resistance time of Grade A materials is the longest, followed by Grade B1, and Grade B2 and B3 are shorter. The specific value of fire resistance time will be different due to different test methods and conditions.

For example, the fire-resistant time of galvanized steel plate without fire-resistant coating is usually between a few minutes and dozens of minutes. Fire prevention measures in practical application In practical application, galvanized sheet is often used in construction and industrial fields, such as roofs, walls, floors, traffic facilities (such as highway guardrails, railway bridges) and so on.

In order to further improve its fireproof performance, the galvanized sheet can be coated with fireproof paint or other fireproof materials.