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Durasub Blast Doors

 BLASTED-RATED DURASUB DOORS 

High-Performance Steel Fire Doors 

Blockade Barriers supplies and installs high-performance steel fire doors for demanding commercial and industrial environments. The Durasub range includes doors tested to provide up to 4 hours of fire resistance, engineered to perform where safety and reliability are critical.

KEY FEATURES
  • Fire rated up to 4 hours

  • Door sizes up to 5m high and 6.8m wide

  • Blast resistant 

  • Paint or powder-coat finishes available

ABOUT DURASUB BLAST DOORS

The Durasub Blast Door range offers a level of flexibility rarely found in fire-rated steel doors. Each doorset is purpose-built to meet exact project requirements, with tested solutions available for openings up to 5 m high and 6.8 m wide. This makes the range ideal for complex or non-standard openings where fire performance cannot be compromised.

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Available in single and double leaf configurations, Durasub Blast Doors are suitable for both internal and external applications.

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The doors are constructed from a high-strength composite panel of fibre-reinforced cement mechanically bonded to punched steel sheets on both outer faces. This construction delivers excellent impact resistance, durability, and long-term reliability in demanding environments.

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Each Durasub Blast Door is bespoke to the client’s exact specification and engineered to withstand explosive impacts. Specialised blast-rated hardware is selected to suit the specific performance requirements of each project, allowing virtually any size or configuration to be achieved while maintaining fire resistance of up to 4 hours.

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The doorsets are suitable for installation into all structural wall types. Once installed, they require minimal maintenance and deliver consistent, long-term performance in harsh or high-use environments.

TECHNICAL SPECIFICATIONS
FEATURES

Blast Rating - upto...

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Fire resistance level up to - /240/30

 

Structural Opening

  • Height: 5,000 mm

  • Width: 6,800 mm

 

Door Leaf

  • Overall Thickness: 50 mm

  • Material: 9.5 mm thick composite panel of fibre-reinforced cement mechanically bonded to punched steel sheets on both outer faces.

  • ​Joint Construction: Mitred and welded​

​Frame

  • Frame Options:

    • Unequal angle frame: 150 × 90 × 8 mm

    • Pressed metal frame: up to 50 mm wide with 25 mm rebate

  • Capping: 90 × 50 × 3 mm thick angle section

  • Joint Construction: Mitred and welded joints

  • Configuration: Single or double rebate with three-sided frame

  • Threshold Plate: 70 × 10 mm thick mild steel plate

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Acoustic Seals

  • Frame: Full perimeter seals

  • Door Leaf: Automatic bottom seal

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Finish

  • Frame and Leaf: Paint finish or powder coating

Durasub Blast Doors
HARDWARE (standard)

Hardware as Standard​

  • Full-length piano hinge suitable for cladding

  • TS83 door closer

  • Panic exit device

  • Two-way extension rods

  • Night latch and handles

  • Sequence selector

Certification

 

  • Fire tested to AS 1530.4:2015

  • Complies with AS 1905.1:2015

  • Rated to international blast standards

DURASUB

D - EXT - 1 

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AUSTRALIAN 

STANDARDS

AS 1905:2015

Contact Durasteel Fire & Blast Doors Australia
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