The code outlines specifications for steel cabinets featuring glass fronts, detailing requirements for materials, dimensions, fabrication, and finishing. It ensures consistent quality and safety for use in various professional environments, addressing durability, security, and design aesthetics. The standard is intended for manufacturers, designers, and inspectors involved in the production or specification of such cabinets.
Overview
The code outlines specifications for steel cabinets featuring glass fronts, detailing requirements for materials, dimensions, fabrication, and finishing. It ensures consistent quality and safety for use in various professional environments, addressing durability, security, and design aesthetics. The standard is intended for manufacturers, designers, and inspectors involved in the production or specification of such cabinets.
Audience
Contents
Structure
Frequently Asked
The standard mandates steel sheets of minimum 0.8 mm thickness for cabinet sides and back, ensuring surfaces are free from burrs and dents. Shelves require steel sheets also 0.8 mm thick with lipped flanges measuring 25 mm wide by 15 mm deep. Shelf brackets must be at least 1.6 mm thick steel sheets, and rack strips should be 1.0 mm thick steel running full cabinet height. Although the code does not explicitly specify glass type or thickness, generally, toughened or annealed glass ranging from 4 mm to 6 mm thick is used to ensure safety and durability in such cabinets.
Cabinet components must adhere to overall dimensional tolerances of plus or minus 5 mm for height (1980 mm), width (910 mm), and depth (480 mm). The steel sheets used for sides and back panels should be at least 0.8 mm thick, with the side panels matching the cabinet depth and the back panel matching the cabinet width. All components must fit properly within these tolerances to maintain structural integrity and ensure proper assembly.
Doors are constructed in two steel glass-front sections (top and bottom) with a frame border not exceeding 65 mm width and minimum steel thickness of 1.0 mm. The right door is hinged on the right side, while the left door is hinged on the left and features a rebate for overlap. Glass panes conforming to IS 1761-1960 are fitted into each section. Clearances between door flanges and cabinet flanges on all sides must not exceed 1.25 mm, and the gap between two closed doors should also be within 1.25 mm to ensure smooth operation and security.
The locking system requires a minimum six-lever lock made of non-corrosive metal in accordance with IS 729-1979. Locks must have duplicate keys and unique lever combinations to prevent interchangeability. The lock is installed on a base plate of at least 20 mm thickness on the right door. Additionally, the locking mechanism incorporates two-way bolting at the top and bottom of the cabinet, with bolts inaccessible from outside when locked, providing enhanced security.
Shelves are constructed from steel sheets at least 0.8 mm thick equipped with lipped flanges (25 mm wide by 15 mm deep) for rigidity. Each shelf rests on four adjustable brackets made from steel sheets a minimum of 1.6 mm thick. These brackets fit into vertical rack strips, 1.0 mm thick steel sheets running the entire height of the cabinet interior, allowing shelves to be repositioned easily without disassembly.
The finishing process begins with thorough surface preparation including removal of dents, burrs, and contaminants via pickling and cleaning. Phosphating treatment conforming to Class C of IS 3618-1966 is then applied following IS 6005-1970 guidelines to enhance corrosion resistance. Afterward, putty (IS 110-1968) is used to smooth surfaces, followed by an aluminium red oxide primer as per IS 5660-1970. Finished panels undergo tests including pressure, corrosion under condensation, and adhesion tests to ensure durability.
Per Clause 10.1.1 of the standard, the ISI certification mark is optional for steel glass-front cabinets. Cabinets may bear this mark to signify compliance with Indian Standards under continuous inspection and quality control by the ISI. While it serves as a mark of quality assurance, affixing the ISI mark is not obligatory.
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