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  1. Home
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  6. 1-hour fire wall certification obtained! Onshiyatto fire partition wall

1-hour fire wall certification obtained! Onshiyatto fire partition wall

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last updated:Mar 19, 2026

三井金属エンジニアリング パイプ・素材事業部
三井金属エンジニアリング パイプ・素材事業部
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We have obtained certification for a fire-resistant wall structure with a one-hour rating using 12.5mm reinforced gypsum board! It is ideal for X-ray rooms, CT rooms, and more.

By using our independently developed specialized auxiliary materials "fireproof felt" and "fireproof sheet," we have obtained certification for a fire-resistant wall structure with a one-hour fire rating using "reinforced gypsum board 12.5mm," making it the first in the industry. It is ideal for fire-resistant walls in hospitals, such as X-ray rooms and CT rooms, where X-ray protection is necessary. For more details about the product, please feel free to contact us.

    Gypsum board and moldingsstoneSubsidiary materials
耐火フェルト・耐火シート.png

1-hour fire wall certification obtained! Onshiyatto fire partition wall

耐火フェルト・耐火シート.png
耐火フェルト・耐火シート.png
  • Related Link - https://www.mesco.co.jp/materials/

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[Head Office] 〒130-8531 3-2-1 Kinshi, Sumida-ku, Tokyo, Arca East 15F TEL 03-5610-7841 FAX 03-5610-7864 Please feel free to contact us.

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【Purpose】 ○ Medical facilities and nuclear-related facilities that generate neutrons → Linac (radiation therapy) treatment room → BNCT (Boron Neutron Capture Therapy) facility ● For more details, please contact us or download the catalog.

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Onshatto neutron shielding material

Onshatto neutron shielding material

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Onshat duct and piping soundproofing and vibration-damping material

Onshat duct and piping soundproofing and vibration-damping material

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Company information

三井金属エンジニアリング

三井金属エンジニアリング パイプ・素材事業部

Building materials, supplies and fixtures manufacturers

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MESCO (Mitsui Mining & Smelting Co., Ltd.) is an engineering company that consistently handles everything from the planning stage of various industrial plants to project management, operational guidance, and maintenance. Utilizing its technology, the company also engages in construction and product development in the materials and pipe businesses. Additionally, MESCO has a wealth of experience in overseas plant construction and leverages the comprehensive capabilities cultivated through its three businesses: engineering, pipes, and materials, to meet customer needs. Since 1969, the pipe division has been involved in the planning, design, manufacturing, and construction of piping systems primarily based on polyethylene composite pipes, while the materials sales division has been handling soundproofing materials and radiation shielding materials since 1982. In June 2012, these two divisions were integrated to form the "Pipe and Materials Division." We are committed to maximizing the synergy effects of this integration and strive daily to be a trusted division for our customers.

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