Audited Supplier
pre-insulated duct sheet
Characteristics
• Light, safe, decrease the load of the building.
• Easy to install, shorten the construction period.
• Protect environment, sandwich structure with antioxidant surfaces.
• High performance in heat insulating, can be served in both high and low temperature environment.
• Fireproof, meet the National standard, makes building safe.
• Soundproof, makes a quieter environment.
• No need to leave space for insulation material installing, so that the story height can be reduced.
• Long service life up to 20 years, very low cost in wastage and maintenance.
• Nice appearance.
Haohai duct system including
• Haohai duct panels
• Accessories for Haohai duct
• Training and service for duct installation
• Datasheet of tech & safety for duct installation
• Undertake projects of duct installation
Product Data Sheet
| Smoke temperature | 125°C |
| Flame height | 15mm |
| Thickness of panel | 20mm |
| Density | 40~69kg/m3 |
| Compressive strength,10% | 0.2MPa |
| Dimension stability | 0.5% |
| Thermal conductivity | 0.021w/m.k |
| Working temperature | -50 to +80°C |
Comparison between Haohai duct and other ducts
| Item | Haohai duct | Zincification duct | Fiberglass duct | XPS |
Thermal conductivity | excellent | poor | general | general |
| Weight(kg/m²) | 1.3-1.4 | 8.32 | 8.8 | 1.1~1.3 |
Flame Retardancy | Phenolic A class PU B1 class | A class | A class | ------ |
Service life | 15~20 years | 6~7 years | 10~15 years | 15~20 years |
| Contaminant | Never | Yes | Yes | A little |
Installation speed | Fast | Slow | Slow | Fast |
Installation effect | Easy to install, nice appearance, high efficiency | Complex install, low efficiency | Complex install, low efficiency | Easy to install, nice appearance, high efficiency |
| Maintenance | Low | High | High | Low |
Haohai duct satisfies the following standards:
• GB50243-2002
Acceptance standard for construction quality of HVAC works.
• GB50045-95
Criterion of fireproof design of civil tall buildings.
Environment
Inspected by the National Construction Material Test center,
Haohai duct passed the formaldehyde volatilization test, could be applied indoor directly.
• Approved by the National Quality Test Center and China Construction Material Association,
Haohai duct is a stable qualify, safe and environment protective product.
• Inspected by Shanghai quality monitor inspection spot, if s innocuous and a safe product.
• There is no Freon in Haohai duct, and won, t destroy aerosphere.
• As a result of low water absorbability of Haohai duct, it won5 t bring germ in the duct.
Installation Accessories
Various flanges,H bayonet, Hooked hanger bracket, Aluminum shaped disk, Covering angle, G.I.
Square, etc.
Installation
