Galvanized Iron (GI), Mild Steel (MS), Stainless Steel (SS) & Aluminum Ducting Systems

(Fabrication, Installation, Testing & HVAC Duct Execution Services)

GI / MS / SS / Aluminium Ducting Systems – Engineering Execution & Field Services

GI (Galvanized Iron), MS (Mild Steel), SS (Stainless Steel), and Aluminium Ducting Systems form the structural backbone of HVAC air distribution networks. These duct systems are engineered to transport conditioned air, fresh air, exhaust air, and return air efficiently across commercial, industrial, and institutional facilities.

GI / MS / SS / Aluminium Ducting Systems

Material selection depends on:

  • Air type (supply / return / exhaust / process)
  • Environmental exposure
  • Corrosion resistance requirement
  • Hygienic compliance
  • Pressure class
  • Fire safety regulations
  • Budget and lifecycle considerations

Compress India provides complete HVAC duct fabrication and installation services including site fabrication, factory prefabrication, erection, insulation, leakage testing, retrofitting, repair, and AMC services.



HVAC Duct Fabrication & Installation Services

We execute complete ducting networks as per project drawings and engineering standards.

Scope of work includes:

GI duct fabrication as per SMACNA standards

MS duct fabrication for industrial exhaust

SS ducting for hygienic and corrosive environments

Aluminium duct installation

Rectangular and circular duct fabrication

Spiral duct installation

Flange and slip joint fabrication

Reinforcement as per pressure class

Duct hanger and support installation

Anchor bolt fixing and structural supports

On-site duct modification

Insulation (thermal / acoustic) application

Cladding and vapor barrier installation

Engineering focus areas:

Pressure class design (Low / Medium / High)

Gauge thickness selection

Air velocity calculation

Static pressure drop calculation

Reinforcement spacing

Leakage class compliance

Fire-rated duct compliance (where applicable)





Material Selection & Application Areas

Correct material selection ensures durability, performance, and compliance.

  • GI Ducting: Commonly used for commercial supply and return air systems.
  • MS Ducting: Used for industrial exhaust, kitchen exhaust, and high-temperature applications.
  • SS Ducting: Used in pharmaceutical, food-grade, and corrosive environments.
  • Aluminium Ducting: Used in lightweight installations and corrosion-sensitive areas.




Testing & Commissioning

Proper testing ensures airtight and performance-compliant duct systems.

Our testing services include:

  • Duct leakage testing
  • Airflow CFM validation
  • Static pressure verification
  • Visual inspection of joints
  • Insulation inspection
  • Hanger load testing
  • Vibration check

Compliance Assurance

Testing confirms compliance with design specifications and industry standards.





Duct Repair & Rectification Services

We provide corrective services for:

  • Air leakage issues
  • Damaged duct sections
  • Corrosion repair
  • Insulation replacement
  • Joint sealing
  • Structural support reinforcement
  • Noise and vibration problems
  • Improper airflow distribution

Root Cause Analysis

Root cause analysis ensures restoration of proper air distribution efficiency.





Retrofitting & Duct Modification Works

Existing buildings often require duct modifications.

We execute:

  • Duct resizing
  • Additional branch connections
  • Rerouting works
  • Replacement of corroded ducts
  • Pressure class upgrade
  • Fire-rated duct retrofitting
  • Acoustic lining upgrade

Improved Efficiency

Retrofitting improves airflow balance and system efficiency.





Insulation & Acoustic Treatment

Duct insulation ensures energy efficiency and condensation control.

We provide:

  • Thermal insulation
  • Acoustic insulation
  • Vapor barrier application
  • Aluminium cladding
  • Anti-condensation treatment
  • Fire-rated insulation systems

Energy & Noise Control

Proper insulation improves energy efficiency and noise control.





Preventive Maintenance & AMC Services

Routine inspection ensures long-term duct integrity and performance.

Our AMC services include:

  • Joint inspection
  • Sealant inspection
  • Corrosion check
  • Insulation integrity check
  • Support alignment verification
  • Leakage detection
  • Cleaning (if required)

Customized AMC Plans

Customized Annual Maintenance Contracts (AMC) are structured for commercial and industrial HVAC systems.





Energy Efficiency & Air Distribution Optimization

Optimized duct systems improve airflow and reduce fan energy consumption.

We conduct:

  • Static pressure optimization
  • Air balancing coordination
  • Velocity correction
  • Leakage reduction
  • System performance benchmarking

Uniform Comfort

Optimized air distribution ensures uniform comfort and reduced operational cost.

Connect with Our HVAC Engineering Team

For professional fabrication, installation, testing, repair, retrofitting, insulation, or AMC services for GI / MS / SS / Aluminum Ducting Systems, connect with our HVAC engineering team for reliable and performance-driven air distribution solutions.

Related HVAC Systems & Engineering Services

GI / MS / SS / Aluminium Ducting Systems are closely associated with:

Pre-Insulated (PIR / PUF) Ducting

Pre-Insulated (PIR / PUF) Ducting

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Fabric & Flexible Duct Systems

Fabric & Flexible Duct Systems

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Air Diffusers & Grilles

Air Diffusers & Grilles

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Dampers & Airflow Control Devices

Dampers & Airflow Control Devices

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Canvas & Connection Joints

Canvas & Connection Joints

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Comfort Ventilation Systems

Comfort Ventilation Systems

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Fresh Air & IAQ Systems

Fresh Air & IAQ Systems

Learn More

Frequently Asked Questions

What are GI, MS, SS, and Aluminium Ducting Systems?

These are the primary materials used for HVAC air distribution ducts. GI (Galvanized Iron) is standard for commercial supply/return air. MS (Mild Steel) is used for industrial and high-temperature exhaust. SS (Stainless Steel) is for hygienic and corrosive environments. Aluminium is for lightweight and corrosion-sensitive applications.

What standards do you follow for duct fabrication?

We fabricate GI ducts as per SMACNA (Sheet Metal and Air Conditioning Contractors' National Association) standards. For MS and SS ducts, we adhere to relevant industrial codes ensuring pressure class compliance, gauge thickness, reinforcement spacing, and leakage class requirements.

Do you provide AMC for ducting systems?

Yes, we offer Annual Maintenance Contracts (AMC) for ducting systems. Our AMC includes joint inspection, sealant inspection, corrosion check, insulation integrity verification, support alignment checks, and leakage detection to ensure long-term performance and system integrity.

What is duct leakage testing and why is it important?

Duct leakage testing measures the airtightness of the ductwork. It's crucial because leaks lead to significant energy loss, reduced airflow at terminals, unbalanced pressure, and poor IAQ. We perform leakage tests to ensure compliance with design specifications and to guarantee system efficiency.

Can you retrofit ductwork in an existing building?

Yes, we specialize in retrofitting and duct modification works for existing buildings. This includes duct resizing, adding new branch connections, rerouting ducts, replacing corroded sections, upgrading pressure class, and installing fire-rated or acoustic linings to meet new requirements.

What is included in duct insulation services?

Our duct insulation services include thermal insulation to prevent energy loss, acoustic insulation for noise control, vapor barrier application to prevent condensation, aluminium cladding for mechanical protection, and anti-condensation treatment, using fire-rated materials where required.

How do I choose between GI, MS, SS, and Aluminium?

Selection depends on air type (supply/exhaust), environmental exposure, corrosion resistance needs, hygienic compliance (SS for pharma/food), pressure class, fire safety regulations, and budget. GI is standard for commercial, MS for industrial exhaust, SS for corrosive areas, and Aluminium for lightweight needs.

What are the signs of a failing duct system?

Signs include visible air leaks at joints, high energy bills (indicating leakage), inconsistent room temperatures, excessive noise or vibration, visible corrosion or damage, condensation on ducts, and poor IAQ due to improper airflow distribution.

How can I improve the energy efficiency of my duct system?

Efficiency can be improved by conducting static pressure optimization, air balancing coordination, velocity correction, reducing duct leakage, adding proper insulation, and performance benchmarking. This reduces fan energy consumption and ensures uniform comfort.

What does your duct installation service include?

Our installation service covers site or factory fabrication, erection, hanger and support installation, joint sealing, insulation application, and comprehensive testing including leakage tests and airflow validation, ensuring the system meets all design and performance criteria.