Cleanroom HVAC Ducting (GI)
Cleanroom HVAC Ducting (GI): Engineered for Total Airflow Integrity
In a controlled environment, the ducting system is the vital conduit that delivers sterile, filtered air to your workspace. Metrolabs provides high-accuracy Galvanized Iron (GI) HVAC Ducting, specifically engineered to support the rigorous pressure and cleanliness requirements of pharmaceutical, research, and healthcare facilities.
Our ducting solutions are custom-built to ensure that air travels from the AHU to the cleanroom with zero leakage and zero particulate contamination.
Why GI Ducting for Sterile Environments?
While standard ventilation may prioritize cost, cleanroom ducting must prioritize long-term performance and internal hygiene. Our GI ducting is manufactured to meet these specific demands.
High-Grade Galvanized Steel
We use premium-quality GI sheets with a heavy zinc coating to ensure: Corrosion Resistance: Withstands the moisture often found in conditioned air and the humidity of specialized lab zones. Structural Rigidity: Prevents duct "oil-canning" or vibrating, which can shed particulates into the airflow.
Internal Hygiene & Smooth Finishes
The internal surface of a Metrolabs duct is as important as the external. Zero-Shedding: We ensure all internal seams are smooth and free of burrs or oily residues that could trap dust or harbor microbial growth. Degreased Surfaces: All ducting is thoroughly cleaned and degreased before installation to ensure immediate compliance with ISO air quality standards.
Airtight Construction & Sealing
Maintaining pressure differentials is impossible with leaky ducts. Precision Joining: We utilize advanced transverse duct flanges (TDF) or specialized gasketed joints to ensure a hermetic seal. Leak Testing: Every system is engineered to meet SMACNA or DW/144 leakage standards, ensuring your HVAC system operates at peak efficiency.
Technical Specifications
| Feature | Metrolabs GI Ducting Standard | Benefit |
| Material | Grade G-90/G-120 Galvanized Steel | Maximum lifespan and rust prevention. |
| Fabrication | Factory-fabricated / CNC Precision | Ensures perfect fit and minimal on-site debris. |
| Sealing | Anti-fungal, Non-toxic Sealants | Maintains sterility and prevents air loss. |
| Insulation | Nitrile Rubber or XPE (External) | Prevents condensation without internal fibers. |
Specialized Design for Cleanroom Integration
Metrolabs does not provide “off-the-shelf” ventilation. We design our ducting networks to integrate seamlessly with your overall Cleanroom Infrastructure:
External Insulation: We utilize closed-cell insulation on the exterior of the duct to prevent thermal transfer and condensation, ensuring no fibrous materials ever come into contact with the sterile air stream.
Tapered Transitions: Smooth internal transitions reduce air turbulence, which lowers noise levels and decreases the load on your AHU fans.
Access Doors: Strategically placed, airtight inspection hatches allow for routine validation and cleaning without compromising the system’s integrity.
The Metrolabs Advantage
We understand that long-term performance relies on a clean installation. Our team follows strict “clean-site” protocols, ensuring that all duct sections are capped and sealed during transport and assembly to prevent any construction dust from entering the system before it is commissioned.
Engineering Insight: For facilities utilizing Vaporized Hydrogen Peroxide (VHP) for sterilization, we ensure that all sealants and gaskets are chemically compatible to prevent degradation and maintaining the airtight integrity of your facility for years to come.