Aluminum Window Frame for Non AC Coach — Duratuf Glass
When you step into a non-air-conditioned railway coach, the first thing you notice is the breeze flowing through the windows. Unlike sealed AC coaches, non-AC coaches rely on natural ventilation to keep passengers comfortable during long journeys. At the heart of this ventilation system is the aluminum window frame — a component that must balance strength, durability, and airflow.
At Duratuf Glass, we manufacture high-quality aluminum window frames for non-AC coaches that combine robust construction with practical design. These frames are engineered to withstand the demands of India’s railway network while providing passengers with the ventilation they need.
If you are looking for Heavy Vehicle Windows India or need reliable Industrial Vehicle Glass Solutions India, this page covers everything you need to know about our aluminum window frames for non-AC coaches, how they are built, and why railway operators and coach manufacturers across the country trust Duratuf.
What Is an Aluminum Window Frame for Non-AC Coach?
An aluminum window frame for non-AC coach is a structural framework made from extruded aluminum sections, designed to hold glass panels and louver shutters in non-air-conditioned railway coaches. These frames are fundamentally different from those used in AC coaches because they must accommodate movable components for ventilation.
Non-AC coaches in India typically feature bus-type windows with sliding glass panels and louver shutters. The window frame holds these components securely while allowing passengers to open and close them as needed. The frame must also withstand the vibrations, weather exposure, and constant use that comes with daily railway operations.
The window frame serves several important purposes:
- Holds glass panels and louver shutters securely in place
- Allows smooth sliding operation for ventilation control
- Withstands the vibrations and stresses of high-speed travel
- Resists corrosion from weather exposure and humidity
- Provides structural integrity to the coach body
- Meets fire safety standards for railway applications
Duratuf Glass manufactures these frames using high-grade aluminum alloys, ensuring they meet the rigorous standards of Indian Railways and modern coach designs like LHB (Linke Hofmann Busch) coaches.
Non-AC Coach Windows vs AC Coach Windows — What’s the Difference?
Many people assume that all railway coach windows are similar. In reality, there is a significant difference between the window structure in AC and non-AC coaches.
AC Coach Windows
AC coaches have sealed windows with double or single laminated glass panels. These windows are fixed and do not open. The glass panels provide thermal insulation to maintain the air-conditioned environment inside the coach. The windows are typically rounded rectangle in shape and may have double glass layers for better insulation
Non-AC Coach Windows
Non-AC coaches have bus-type windows with sliding glass panels and louver shutters. These windows can be opened and closed by passengers to control ventilation. The window frames are designed to accommodate:
- Sliding glass panels — Allow passengers to open the window for fresh air
- Louver shutters — Provide ventilation while preventing rain and debris from entering
- Emergency window assemblies — Allow for quick evacuation in case of emergency
The window frames in non-AC coaches must be robust enough to handle frequent operation by passengers while maintaining a secure fit.
Why Aluminum for Non-AC Coach Windows?
Aluminum has become the material of choice for railway coach windows for several compelling reasons.
Types of Non-AC Coach Window Frames
Duratuf Glass manufactures different types of aluminum window frames to suit various non-AC coach designs and operational requirements.
Bus-Type Window Frames with Sliding Glass
Bus-type windows are the most common type found in non-AC coaches. These feature sliding glass panels that passengers can open and close for ventilation.
The frame consists of:
- Outer frame — Fixed to the coach body
- Inner sliding frame — Holds the glass panel and slides within the outer frame
- Louver shutters — Provide ventilation while keeping rain and debris out
Our bus-type window frames are designed with heavy-duty profiles that increase structural integrity. The sliding mechanism is engineered for smooth operation and long service life.
Emergency Window Assemblies
Emergency windows are critical safety features in non-AC coaches. These windows are designed to be opened quickly in case of emergency, allowing passengers to evacuate the coach.
Our emergency window assemblies include:
- Aluminum outer frame — Securely fixed to the coach body
- Movable sash — Can be opened rapidly in an emergency
- Quick-release mechanism — Allows for fast operation when needed
The aluminum alloy outer frame is designed with features for rapidly tightening the window to the passenger train body.
Louver Shutter Frames
Louver shutters are an essential component of non-AC coach windows. These angled slats allow air to flow into the coach while preventing rain and debris from entering.
Our louver shutter frames are manufactured with precision to ensure:
- Proper angle for optimal airflow
- Secure fit within the window frame
- Durable operation over many years of use
Technical Specifications
| Feature | Specification |
|---|---|
| Frame Material | Aluminum Alloy (6000 series) |
| Frame Type | Bus-type window with sliding glass and louver shutters |
| Window Configuration | Sliding glass panel + louver shutters |
| Standard Dimensions | 1460mm x 700mm (custom sizes available) |
| Surface Finish | Powder coated / Anodized |
| Color Options | RAL 9005 (black) and other custom colors |
| Glass Type | Toughened safety glass / Laminated safety glass |
| Glass Thickness | As per IS 2553 specifications |
| Vibration Resistance | Heavy-duty profile for structural integrity |
| Corrosion Resistance | Excellent — suitable for all weather conditions |
| Fire Safety | Fireproof aluminum construction |
| Customization | Custom sizes, profiles, and finishes available |
How Duratuf Aluminum Window Frames Are Made
At Duratuf Glass, we follow a meticulous manufacturing process to ensure every window frame meets the highest standards of quality and durability.
Material Selection
We use premium-grade aluminum alloys, typically from the 6000 series (such as 6063), known for their excellent extrusion characteristics, strength, and corrosion resistance. The aluminum sections are sourced from trusted suppliers and tested for quality before production.
Extrusion
The aluminum is heated and forced through precision dies to create the desired profile shapes. This extrusion process allows us to create complex cross-sections that incorporate features like:
- Glazing channels for glass installation
- Sliding tracks for smooth window operation
- Gasket grooves for weather seals
- Reinforcement ribs for added strength
Surface Treatment
Our emergency window assemblies include:After extrusion, the frames undergo surface treatment to enhance durability and appearance:
- Powder Coating — Provides a durable, weather-resistant finish. Our powder-coated aluminum frames are durable and eco-friendly. Standard color options include RAL 9005 (black) and other custom shades.
- Anodizing — Creates a protective oxide layer that resists corrosion and wear
Assembly
The finished frames are assembled with the appropriate glass panels and louver shutters. Rubber packings are used for secure installation and vibration resistance. The sliding mechanism is tested for smooth operation before the frame leaves our facility.
Our louver shutter frames are manufactured with precision to ensure:
- Proper angle for optimal airflow
- Secure fit within the window frame
- Durable operation over many years of use
Standards and Compliance
Duratuf Glass ensures all our non-AC coach window frames meet or exceed the relevant standards.
Indian Standards
- IS 2553 (Part 1) — Safety glass specification for railway coaches and general purposes
- ICF Drawings — Our frames are manufactured as per Integral Coach Factory (ICF) drawings
Railway Specifications
- LHB Coach Standards — Our frames meet the specifications for LHB non-AC coaches
- Bus-Type Window Specifications — Frames are designed to match the requirements of bus-type windows used in non-AC coaches
Why Choose Duratuf Glass for Non-AC Coach Window Frames?
Who Uses Duratuf Non-AC Coach Window Frames?
Our aluminum window frames and automotive glass solutions are used by a wide range of clients across India:
- Indian Railways — Non-AC coaches, sleeper coaches, and general coaches
- Coach manufacturers — LHB coach builders and ICF
- Bus body builders — ACGL, JCBL, Azad Coach, Irizar TVS
- State Transport Undertakings — KSRTC, MSRTC, TNSTC, APSRTC, RSRTC, Haryana Roadways
- Heavy vehicle manufacturers — Ashok Leyland, Tata Motors, Volvo, SML Isuzu, Eicher, M&M, Scania, Bharat Benz
- Industrial companies — Operating heavy vehicles in demanding environments
Whether you are placing an order for a single coach or equipping an entire fleet, Duratuf Glass handles both small orders and large-volume contracts.
Applications Beyond Railways
Serving Clients Across India
| City / Region | Duratuf Presence | What We Supply |
|---|---|---|
| Haryana | Automotive Glass Suppliers in Haryana | Non-AC coach window frames, bus windows, heavy vehicle glass |
| Delhi | Manufacturing units (2 units) | Coach windows, emergency window assemblies |
| Indore | Commercial Automotive Glass Indore | Custom window frames, industrial glass solutions |
| Bangalore | Manufacturing unit | Bus windows, coach windows, heavy vehicle glass |
| Pan-India | Industrial Vehicle Glass Solutions India | All products supplied through direct shipment |