Extruded channels are generally made from aluminium or plastics some times rubber is also used. In plastics extruded PVC channels are popular. An image is given here for " H " channel. Among rubbers, extruded rubber channels have wide industrial use. The following image shows the silicone extruded channels.
Extruded Channels comes with variety of shapes that is with equal or unequal legs. The importance of extruded channels can be well understood if viewed in the context of the enormous applications they have in a variety of industries. Aluminium is a much used and popular material in its use as extruded channels. Let's view some of these applications to understand its importance. Application of Aluminium Channels

• Electronics Industry
  Extruded aluminium channels are used in Heatsink enclosures. These extruded aluminium channels are specifically designed for use as robust, low electrical electronics enclosures.
  
  
• Traffic Solutions
  Extruded aluminium channel for use in traffic signs are medium strength aluminium alloys . They combine excellent corrosion resistance along with a high structural property. The use of the extruded aluminium channels produces signs that gives:
  • Excellent structural rigidity
  • Resistance to deformation at fixing points
    
    
  
  
• Building and Housing
  Extruded aluminium channels are used in many types of building applications. This includes cladding, where prefabricated carrier grid is often an extruded aluminium channel.
  
  
  
• Miscellaneous Applications
  • Storage device
    Extruded aluminium channels are used in storage devices as frames for supporting the structure.
    
    
  • Step Ladder
    Another application of extruded channels lies in the making of ladders, where extruded channel are used in side rails.
    
    
    
  • Manhole Braces
    The extruded aluminum channels used in the Manhole Braces have been designed to give maximum strength to weight ratio along with providing a smooth and a sliding action.
    
    
  • Railways
    The railways also utilize the services of extruded aluminium channels. The inner window frame in the railway compartments are made up of pieces of extruded aluminum channel that are welded together.