Hebei Hong'an Fire Door Co., Ltd. is one of the most reliable manufacturers and suppliers of fire‑and‑blast resistant door in China. If you're going to buy durable fire‑and‑blast resistant door made in China, welcome to get free sample from our factory. All customized products are with high quality and low price.
Blast‑resistant doors are special‑grade building components for life‑safety purposes. Their protective performance is determined by the full‑chain factors including steel material, frame welding, sealing fittings, anchoring installation and after‑sales maintenance. At the preliminary project stage, the blast‑resistance rating shall be confirmed according to the explosion over‑pressure value of the site. Construction requirements laid down in national‑standard atlases shall be strictly observed, and non‑standard downgraded products shall be rejected. Routine inspection and maintenance shall be carried out, so that shock waves, flames and smoke can be blocked in case of an explosion accident and a reliable safety barrier can be provided for factory‑plant staff.
Essential Differences Between Blast‑Resistant Doors and Blast‑Relief Doors
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Blast‑Resistant Door
Rigid pressure‑bearing protection. Its high‑strength door frame bears the pressure of explosion shock‑waves. The door remains closed and structurally intact throughout an explosion, stopping pressure, flame and smoke from spreading outwards. Its bearing pressure range starts from 30 kPa up to 1000 kPa and above. It is primarily deployed to safeguard control rooms, refuge chambers, high‑value‑equipment rooms and ammunition warehouses.
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Many construction‑project purchasers tend to confuse these two types of special‑purpose doors. They adopt completely opposite protection mechanisms and must never be substituted for one‑another:
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Verdera Medicine Cabinet Mounting Bar
Pressure‑diversion protection. A preset opening‑pressure threshold is configured. Once the overpressure inside the workshop hits the set value, the door swings swiftly outwards to discharge explosion shock‑waves and reduce loadings on building walls, therefore preserving the main building structure. Its actuation pressure commonly falls between 10‑20 kPa. These doors are installed on pressure‑relief surfaces of pulverized‑coal workshops, flour mills, boiler houses and powder‑processing factories.
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