From a single glass panel to a multi-tower project. BIS/ISI certified, 4 mm to 19 mm, processed and delivered from Bangalore.
Also called tuffen glass, tafan glass, or tempered glass, 4 to 5 times stronger than ordinary glass. Breaks into blunt granules instead of sharp shards. Mandatory for doors, railings, balustrades, and overhead glazing per NBC 2016. Laminated glass also qualifies. Read our glass selection guide.
Specified wherever building codes require impact-resistant or safety glazing.
Most building projects require more than one type of glass. Karnataka Metal Company offers laminated glass through quality-tested service providers for overhead and security glazing, processes double glazed units (DGU) for thermal and acoustic insulation, and supplies aluminium framing sections for curtain walls and window systems, all from a single source in Bangalore, reducing lead times and on-site coordination. Along with processing, KMC's trading division supplies glass types such as lacquered and mirror glass, produced by float manufacturers like Saint Gobain and Gujarat Guardian.
| Thickness | Approx. Weight (kg/sqm) | Typical Use |
|---|---|---|
| 4mm | 10 | Furniture tops, picture frames |
| 5mm | 12.5 | Windows (residential), wardrobe and kitchen cabinets |
| 6mm | 15 | Windows, facade glass |
| 8mm | 20 | Frameless doors, commercial facades, balustrades (low height), shower enclosures, full-height interior partitions |
| 10mm | 25 | Balustrades, railings, structural glazing |
| 12mm | 30 | Balustrades (full height), frameless doors, patch fitted doors, shower enclosures, floor panels |
| 15mm | 37.5 | Structural applications, point-fixed glazing, floor glass |
| 19mm | 47.5 | Heavy structural glazing, high wind-load facades, aquariums |
| Dimension | Specification |
|---|---|
| Minimum size | 305 × 305 mm |
| Maximum size | 2,800 × 5,000 mm |
| Standard width for facades | 1,200 to 1,500 mm |
| Maximum for overhead glazing | Subject to thickness and span calculations |
| Process | Capability | Notes |
|---|---|---|
| CNC cutting | Italian CNC machines | Precision cuts before tempering |
| Edge finishing | Arrised, flat ground, flat polished, bevelled | Multiple edge polishing and grinding machines |
| Drilling and notching | Holes, slots, and cut-outs | Must be completed before tempering. Toughened glass cannot be cut or drilled after processing. |
| Heat soak testing (HST) | On-site heat soak furnace | Detects NiS inclusions that can cause post-installation breakage. |
| Ceramic printing | Screen-printed patterns | For spandrel panels, decorative facades, and privacy glass |
The main types of toughened glass by finish are clear, tinted, Low-E coated, pyrolytic, fluted, lacquered (back-painted post-tempering), and ceramic frit. Base prices are quoted for clear glass, with premiums for other types.
Premium by glass type (over clear glass base price):
| Glass Type | Typical Premium | Notes |
|---|---|---|
| Tinted | Approx. 30% above clear glass of same thickness | Solar control, aesthetic colour |
| Low-E coated | Project-based pricing | Thermal insulation, ECBC compliance |
| Pyrolytic | Approx. 50% above clear glass of same thickness | Durable on-line coating, no silver, suitable for exposed single-glazed applications |
| Fluted | Approx. 50% above clear (1.5x), similar to hard coat | Ribbed vertical texture, privacy with diffused light |
| Lacquered | 3-3.5x depending on colour, approx. Rs. 300/mm/sqm | Back-painting applied post-tempering, vibrant colours for interiors |
| Ceramic Frit | Approx. 2.5-3x the price of clear glass. Coating alone approx. Rs. 900/sqm regardless of glass thickness; tempering charges extra (total = base glass + coating + tempering) | Patterns fused during tempering, spandrel panels, decorative facades. Also exterior grade and must be tempered, unlike lacquered glass. Lacquered comes mainly in 4, 5, and 6 mm (8 mm on manufacturing order only); ceramic frit can use any thickness since the coating is applied on clear glass. |
All premiums listed above exclude tempering charges. The table above lists approximate price points to make budgetary decisions. Actual costs will depend on the glass selected and prevailing market conditions.
The final cost of toughened glass also depends on edge finishing (arrised, ground, polished, or bevelled), heat soak testing, glass substrate brand, and order quantity. For project-specific pricing, contact us with your panel schedule or check our toughened glass price list.
RMZ Eco World 22
Bagamane Solarium
Sattva Knowledge Point
Sattva Signature
Puravankara Zentech
Prestige Sanctuary Nandi Hills
RMZ Eco World 22
Bagamane Solarium
Sattva Knowledge Point
Sattva Signature
Puravankara Zentech
Prestige Sanctuary Nandi Hills
No rigid minimum order quantity. We regularly process orders ranging from 1 panel to 5,000+ panels, with consistent quality and lead times across all batch sizes.
Every toughened glass panel carries a permanent ISI safety mark etched during the tempering process, as per IS 2553 (Part 1): 2018. We provide BIS test certificates for every batch on request.
A dedicated heat soak furnace on-site reduces the risk of spontaneous breakage caused by nickel sulphide (NiS) inclusions. Recommended for all facade and overhead glazing projects.
Equipment includes a roller wave gauge, GASP (non-destructive stress testing), Merlin Lazer, surface table. We conduct human impact and ball drop testing as per BIS standards, producing some of the flattest glass in the industry with minimal bow, roller wave, and edge lift distortion.
Source your toughened glass and aluminium sections for window frames, curtain walls, and railings from a single supplier. One purchase order, one delivery schedule, less coordination on site.
A 50,000 sq ft plant at Nelamangala, Bangalore, with a project-capable tempering furnace rated at 25,000 sqm/month, adhering to some of the tightest flatness tolerances offered by the market. One of the largest toughened glass processing capacities in South India, supplying projects across Karnataka, Kerala, Tamil Nadu, Telangana, and Andhra Pradesh.
Whether you need help with specifications, thickness selection, BIS compliance documentation, or delivery logistics, our glass team is ready to assist.
If you are searching for toughened glass near me or a toughened glass shop near me in Bangalore, visit our retail outlet at A.M Road for immediate stock, or contact us for processed toughened glass delivered to your project site.
