It is a large-diameter machine hatch with a fire resistance performance of 2 hours.
Since it meets the performance criteria for a fire-resistant structure (floor) of 2 hours, it also possesses "1-hour flame resistance performance." Due to the integrated structure of the lower cover and the fire-resistant cover, the height of the product is minimized, allowing it to adapt to various slab heights. The fire-resistant hatches are compatible with all large-diameter machine hatches (excluding ultra-large-diameter machine hatches).
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basic information
"Fire Resistance Performance Test and Evaluation Method Document" 4.1 Fire Resistance Test Method *1 Fire-resistant structure (floor) 2 hours *2 Performance evaluation was conducted and the following performance criteria were met. Additionally, this performance evaluation can also be deemed to meet the 'one-hour flame barrier performance of specific fire protection equipment.' *1 Regulations regarding test specimen dimensions were excluded, and performance was verified using small test specimens. *2 Building Standards Act Enforcement Order Article 107 (Refer to technical standards regarding fire resistance performance) ◆ Test Standards: Fire Resistance Performance Test and Evaluation Method Document 4.1 Fire Resistance Test Method ◆ Heating Time: 120 minutes ◆ Test Duration: 300 minutes ◆ Performance Evaluation ◇ Non-Damage The maximum or average temperature of the structural members (top cover) supporting the vertical load must not exceed the following temperatures by the end of the test. Maximum Temperature: 500℃ Average Temperature: 400℃ ◇ Heat Insulation For 72 minutes from the start of heating, the temperature rise on the back side of the test specimen must average below 140K and not exceed a maximum of 180K. ◇ Flame Barrier For 72 minutes from the start of heating, the following criteria must be satisfied.
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Detailed information
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Fire resistance test for opening 600×600.
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Fire resistance test for opening 800×1800.
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Company information
Since our establishment, Chubu Corporation has been sending out kitchen equipment such as commercial shaved ice machines, vegetable processors, and food preparation devices, based on the technology cultivated as a cast metal manufacturer. We have also expanded into the construction-related field, steadily building our foundation as a building materials manufacturer up to the present day. Our lineup primarily supports the construction-related sector with cast products such as roof drains, drainage equipment, and manhole covers, as well as steel materials like grating, pit hardware, and metal products like underfloor inspection openings. By accurately reading the times and maximizing the development capabilities and casting technology we have cultivated, we design a safe and secure living environment from the ground up to support sustainable urban development, continuously creating as a familiar presence.