What are the specifications and sizes of fire-resistant sleeves?

Fireproof Sleeve Specifications and Dimensions

The fire hoses used include DN25, DN32, DN40, DN50, DN70, DN80, DN10, DN15, and DN20.

The sizes of the hydrant pipes, sprinkler pipes, and galvanized pipe manifolds should be determined based on the design flow. Specifications are provided in both the 'Building Regulations' and the 'High-rise Regulations.' For risers, the diameter should be DN100 or above; for sprinkler pipes, DN25 or above; for single sprinklers, DN25; for two sprinklers, DN32; and for three to four sprinklers, DN40.

The Function of Fireproof Sleeves

1. Protecting the Environment and Workers' Health

Alkaline glass fiber itself has unique tensile strength, without wrinkles or breakage, sulfur-resistant, halogen-free, non-flammable in pure oxygen, with excellent insulation properties.

Cured silicone is safe and environmentally friendly and effectively enhances performance. It protects workers' health and reduces the occurrence of occupational diseases. Unlike

asbestos products, it is harmless to humans and the environment.

2. Excellent Heat Resistance

The organic-silicon structure on the surface of refractory material shells combines "organic groups" with "inorganic structures," integrating the characteristics of organic substances

with the functionality of inorganic substances. Compared with other polymer materials, its most notable feature is high-temperature resistance. When a siloxane molecular chain is

used as the main chain structure, the C-C bond is 82.6 kcal/mol, whereas in silicone, the Si-O bond is 121 kcal/mol, giving it high thermal stability. Chemical bonds do not break

easily, and it does not decompose at high temperatures. Silicone is not only heat-resistant but also cold-resistant, suitable for use across a range of temperatures. Its chemical,

physical, and mechanical properties remain relatively stable despite temperature changes.

3. Splash Prevention and Multi-Layer Protection

In the smelting industry, the medium temperature of electric furnaces is extremely high, and even in the welding industry, high-temperature molten droplets are easily produced.

When slag forms inside pipes and steel cables, it cools, solidifies, and hardens. The rubber layer on the pipes eventually becomes brittle and cracks. Multi-layer silicone fireproof

coatings provide multiple levels of protection at temperatures up to 1300°C, preventing damage to unprotected equipment and cables, preventing the scattering of molten metals

such as iron, copper, and aluminum, and effectively safeguarding surrounding cables and equipment.