1. Material:
    • Base Material: Galvanized Iron (GI)
    • Coating: Zinc coating to prevent corrosion
  2. Dimensions:
    • Thickness: Typically ranges from 0.5mm to 1.2mm, customizable based on requirements
    • Width: Standard widths range from 25mm to 50mm
    • Length: Custom lengths available, commonly from 1 meter to 3 meters
  3. Standards:
    • Compliance: Meets industry standards for ductwork components such as ASTM A653 for galvanized steel sheet
  4. Fabrication:
    • Edge Treatment: Smooth edges for safety and ease of handling
    • Forming: Precision-formed to ensure uniformity and tight fit
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DUCT G.I C PATTI refers to galvanized iron (GI) ducting components, specifically corner patti or corner pieces used in the assembly of ductwork for HVAC (Heating, Ventilation, and Air Conditioning) systems. These components are essential in ensuring a secure and efficient connection between duct sections, providing structural integrity and airtight seals.


  1. Durability:
    • Corrosion Resistance: The zinc coating on galvanized iron offers excellent resistance to rust and corrosion, extending the lifespan of the ducting system.
    • Strength: GI provides robust structural integrity, ensuring the ducts maintain their shape and resist damage under typical operating conditions.
  2. Installation:
    • Ease of Use: Pre-fabricated corner pattis simplify the assembly of ductwork, reducing installation time and labor costs.
    • Consistency: Factory-made components ensure consistent quality and fit, leading to more reliable and airtight duct systems.
  3. Maintenance:
    • Low Maintenance: The durability and corrosion resistance of GI reduce the need for frequent maintenance and repairs.
    • Longevity: With proper installation and minimal maintenance, GI ducting systems have a long operational life.
  4. Cost-Effectiveness:
    • Affordable: GI corner pattis offer a cost-effective solution for ducting needs compared to other materials like stainless steel.
    • Lifecycle Cost: Lower maintenance and replacement costs contribute to the overall cost-effectiveness over the system’s lifecycle.
  5. Safety:
    • Fire Resistance: GI ducting components are non-combustible, enhancing the fire safety of the building’s HVAC system.
  6. Environmental:
    • Recyclability: Galvanized steel is fully recyclable, making it an environmentally friendly choice for ductwork components.


  • Commercial Buildings: Used extensively in HVAC systems for offices, malls, hospitals, and other commercial establishments.
  • Industrial Facilities: Suitable for ventilation and air conditioning in factories and warehouses.
  • Residential Buildings: Applied in home HVAC systems for efficient air distribution.


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