Fire Rated Steel Door

1. STEEL DOOR AND FRAMES

Specifications
*DOORS
All Steel door leafs shall be 40/45mm, double skinned galvanized, commercial grade steel G90 zero spangle to B.S.2989 made of 1.2mm thick face sheets of hollow metal construction and Rockwool/ Honeycomb infill.

Longitudinal edges shall be butt seamed, mechanically interlocked. Top and bottom of doors shall be provided with inverted recessed channels spot welded to door faces. Doors shall have 10mm clearance from finished floor level

* Frames

Steel frames shall be 1.2mm thick galvanized commercial grade steel G90 to B.S.1245 with mitered, welded corners round to a smooth uniform finish, wall anchors appropriate to floors and wall construction shall be provided on each jamb. All frames shall be prepared, reinforced, drilled and tapped to recieve specified mortised ironmongery.

* Glazing

Door glazing where applicable shall be 6mm georgean wired glass or clear glass with galvanized steel frames.

* Finishing

All steel doors and frames powder coated, color to client's approval.

*Hardware Preparation

Each door and frame shall be blanked, reinforced, drilled and tapped ready to recieve mortised, templated hardware.

2. LOUVER DOORS

Specification
*Doors
All door leafs shall be 40/45mm, double skinned galvanized, commercial grade steeel G90, zero spangle as per B.S.2989 made of 1.0mm thick face sheets of hollow metal construction and honeycomb infill core insulation. Galvanized steel louvers welded with the door. Louver

blades shall overlap obstructing vision but allowing ventilation.
*Frames

Steel frames shall be 1.2mm thick galvanized commercial grade steel G90 as per B.S.1245 with mitered, welded corners rounded to a smooth uniform finish, wall anchors appropriate to floors and wall construction shall be provided on each jamb. All frames shall be prepared, reinforced, drilled and tapped to received specified mortised ironmongery.

3. GLACED DOORS

All door leafs shall be 40/45mm, double skinned galvanized, commercial grade steel G90, Zero spangle as per B.S.2989 made of 1.2mm thick face sheets of hollow metal construction and honeycomb infill core insulation. All glasses used in these vision panel doors is full georgean wired reinforced glass. Wired glass is essentially manufactured to meet fire requirements, all though it is also used for decorative purpose.

4. SLIDING DOORS

All door leafs shall be 45mm, double skinned galvanized, commercial grade steel G90, zero spangle to B.S.2989 made of 1.0mm thick face sheets and solid core construction of compressed honeycomb/rock wool infiled. Overhead rails shall be made of steel galvanized to B.S.2989 standard lengths 1800mm, 2100mm, 2400mm and 300mm. Brackets shall be made of pressed steel.

Suitable brackets are available for single and double run application, both side wall and soffit fixing. Spaced at centers not exceeding 900mm reducing to 600mm for heavier doors. Hangers and guides are fitted with maintenance free precision bearings sealed for life or "iolite" plain bearings. Steel parts are rust proofed by electrozinc plating or painting. Floor channels shall be made of steel in three sizes lugged for concrete and drilled for use with drainage funnels.

5. ACOUSTIC DOORS

* Doors
All door leafs shall be 50/65/70 mm, double skinned galvanized, commercial grade steel G90, zero spangle to B.S.2989 made of 1.0mm thick face sheets and solid core construction of compressed mineral wool infill 100k.g./m3 density filled in between reinforcing stiffners and 2mm lead sheets, 3mm acoustic sheet.

Door leafs shall be rebated on 3 sides. Doors shall achieve sound reduction index varying from 35db to 45db at 4KHz octave brand.

* Frames

Steel frames shall be 1.5/2/3 mm thick galvanized commercial grade seel G90 to B.S.1245 with mitered, welded corners ground to a smooth uniform finish, wall anchors appropriate to floors and wall construction shall be provided on each jamb. All frames shall be prepared, reinforced, drilled and tapped to recieve specified mortised ironmongery. In addition, for higher acoustic rating, rubber foam glued on all four sides and heavy duty double profile screwed to on all 3 sides.