Corosteel
Corosteel sectional overhead doors are economically
priced, neat and functional. They are ideal for factories requiring motorised
entrance doors, large complexes looking for easy, quick door operation and
entrances to parking garages. Made from corrosion resistant steel, they are
able to withstand industrial abuse and damaged sections are easily replaced.
- Highly recommended for adverse weather conditions
- Suitable for single or double doors. Can be custom-made to suit opening.
- Non-protruding so that vehicles can park close to the door, both inside and outside the entrance.
- Coroma manufactured tracks and hinges are hot dipped galvanised steel for maximum corrosion protection, with robust ball bearing rollers that ensure smooth, trouble free operation.
- The door’s wedging action excludes dust, wind and weather seals
on the sides and bottom are standard.
- Can be used where headroom is limited, i.e. less than 300mm, using double tracks or special ‘low headroom’ tracks.
- Sectional overhead garage doors are the most frequently specified door mechanism by the professional sector.
- Available in both tension and torsion hardware sets.
- Doesn't have limited height restriction for higher than normal vehicles.
- Standard doors consist of 4 or 5 hinged panel sections per door. Special height doors are also available on request.
- Supplied with a slide bolt for locking purposes on non-automated doors.
- A chrome-plated centre lock with dual catches and cables is available as an optional extra for garages with no internal door.
- A Neoprene bottom gasket seals and protects the door from shock.
- Can be locked using shootbolts on either side.
- The door panels are manufactured from horizontally galvanised steel, roll formed to a Coroma profile of 225mm by 0.8mm or 0.6mm gauge material.
- Two modules are riveted together to form one 450mm high section.
- The panels can be insulated using 25mm expanded polyurethane material plus aluminium backing plate for superior temperature and sound control.
- Doors can be punched to incorporate vision panels and ventilation holes.
- Corosteel doors are galvanised and powder coated in a wide selection of colours.
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| Specifications: | GD0 | GD5 | GD10 |
| Maximum door dimensions | 5000mm x 2250 | 5000 x 2250 | 5000 x 3250 |
| Drawbar length | 3m | 3m | 4m |
| Traction force | 55kg | 75kg | 100kg |
| Battery back-up | Not available | Optional | Optional |
The doors are custom crafted to suit openings up to a maximum of 6.5m wide by 5m high, but can be made up to double door widths and abnormal heights. Consult the Coroma design office for doors outside the standard parameters.

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