Tempered Glass Certification and Technical Specifications: A Procurement Guide for 2026

When specifying tempered glass for building projects, procurement teams and architects need to confirm more than the glass thickness. Certification, dimensions, and processing standards directly determine whether the glass can be installed safely, imported legally, and relied upon for long-term facade performance. This guide explains the key certification schemes, technical parameters, and project-specific glass types that matter in 2026.

What Is Tempered Glass and How Is It Made?

Tempered glass is a type of safety glass that is heat-treated to increase its strength and alter its breakage pattern. When broken, it fractures into small, obtuse-angle granules instead of sharp shards. This behavior is why building codes in the United States, Europe, Australia, and elsewhere list tempered glass as an accepted safety glazing material.

KXGLASS (Kunxing Glass) produces tempered glass in thicknesses from 4mm to 25mm, with standard sizes including 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 19mm, 22mm, and 25mm. The company is a Chinese glass processor based in Dongguan, Guangdong Province, and serves buyers in Australia, America, Asia, and Europe.

The Tempered Glass Certification Landscape for 2026

Tempered glass certification can be divided into three practical categories: international processing standards, national safety glazing approvals, and independent laboratory test reports. Buyers should treat these as complementary layers of evidence.

International and Regional Standards

KXGLASS states that its products meet European CE/EN12150, Australian AS/NZS 2208, and American SGCC standards. The company also reports passing ISO international certification and China national 3C certification.

SGCC Certification for the US Market

SGCC certification provides a direct pathway for tempered and laminated glass used in US projects. KXGLASS holds SGCC acknowledgement of certification under numbers 5566/5568/5569/5570/5571/5572/5573/5580/5581, covering standards ANSI Z97.1-2009, CPSC 16 CFR 1201, and CAN/CGSB 12.1 (COMP+CAN).

SGS Test Reports for Heat-Soaked Glass

For projects that require additional assurance against spontaneous breakage from nickel sulfide inclusions, heat-soaked tempered glass is a common specification. KXGLASS has SGS test reports for 6mm, 10mm, and 15mm heat-soaked float toughened glass, issued by SGS-CSTC Standards Technical Services Co., Ltd. GZ Branch Testing Center, based on CNAS/ilac-MRA accredited safety glass tests.

The relevant certification numbers are GZIN1806033811CM (6mm), GZIN1806033816CM (10mm), and GZIN1806033817CM-01 (15mm). These reports apply to the global market and document that the glass was tested for safety glazing applications, giving buyers a verifiable basis for their own documentation.

Heat Soak Oven Calibration

Heat soaking is only meaningful if the process itself is controlled and documented. KXGLASS presents the calibration report for its Heat Soak Process Oven CS-HST-1808, issued by JAS (Inspection & Testing) Ltd. under number J18-117-R01-180903. The report is aligned with the EU standard BS EN 14179-1:2016, which is the same standard used for heat-soaked thermally toughened glass in European projects.

In practice, this creates a traceable chain: the oven is calibrated to a known standard, the test reports confirm glass performance, and the finished product is certified against regional building codes.

Laminated Glass Certification

Laminated glass, which is often specified for overhead glazing, doors, and high-security areas, requires its own certification. KXGLASS holds a Declaration of CPD Conformity for SGP laminated glass and PVB laminated glass, issued by LABTEST TECHNOLOGY LABORATORY LTD. under number LBTC202006209S, applicable to the EU market. The declared standards are EN ISO 12543-2-2011 and EN ISO 12543-3-2011.

This is relevant because SGP interlayers are used when higher structural strength or hurricane resistance is required, and having EU-recognized conformity documentation simplifies specification for projects governed by European norms.

Core Technical Parameters and Performance Data

Buyers evaluating tempered glass should compare the mechanical, thermal, and safety parameters of the glass, not just the brand or country of origin. The following parameters are documented for KXGLASS tempered glass.

Mechanical Strength

KXGLASS reports a bending intensity of 150 MPa and a surface stress of 95 MPa for its tempered glass. These values indicate that the glass has undergone controlled thermal treatment to introduce compression into the surface, which is the physical basis for its higher load resistance.

Thermal Stability

Thermostability is listed as 250–320°C. In practice, this means tempered glass can tolerate higher temperature differentials than annealed glass, which reduces the risk of thermal stress fracture in curtain walls, spandrels, and sun-exposed facades.

Safety and Breakage Pattern

KXGLASS describes the safety rating as "best," with a breakage pattern of obtuse-angle grains. To avoid relying on promotional language, buyers should reference the applicable test standards that formally define acceptable fragmentation. The EU market report for KXGLASS tests impact performance in compliance with BS 6206:1981 & AMD 8693:1995, which is the older UK standard for safety glass impact performance.

Spontaneous Breakage and Self-Destruction

KXGLASS notes that self-destruction can sometimes occur. Spontaneous breakage is a known limitation of tempered glass, primarily caused by nickel sulfide inclusions. This is why the heat soak test exists: it accelerates the expansion of problematic inclusions before the glass is installed, reducing the risk of in-service breakage. For critical overhead or large-format applications, heat-soaked glass provides measurable risk reduction.

Tempered Glass Types and Project Applications

The choice between different glass configurations depends on the project's functional requirements. Below are the main categories that a building project can specify, along with the documented options from KXGLASS.

Door and Window Tempered Glass

Tempered glass is widely used in door and window systems because it provides safety, structural support, and resistance to thermal stress. For doors, a thicker glass such as 10mm or 12mm may be required to handle frequent opening and closing, while residential windows often use 6mm or 8mm.

Frosted and Tinted Tempered Glass

Frosted or semi-frosted tempered glass is commonly used for partitions, office interiors, and bathroom glazing to add privacy without sacrificing natural light. Tinted glass serves a similar role in controlling glare and solar heat. KXGLASS also offers silkscreen printing glass with customizable colors and patterns, which is used when a decorative pattern or brand mark must be integrated into the glass.

Low Iron Tempered Glass

Low iron glass is specified when a higher level of transparency and color neutrality is required, such as in display windows, storefronts, and high-end facades. The company's ultra-clear appearance is often associated with low-iron formulations.

Insulated Tempered Glass

Insulated glass (double glazing) offers heat insulation, noise insulation, and reduced building self-weight compared to some alternative facade systems. KXGLASS offers insulated glass with spacer widths of 6A, 9A, and 12A, and documents that the product can be combined with tempered glass to balance energy efficiency with safety.

Laminated Tempered Glass

Laminated glass is manufactured by bonding two or more glass panes with PVB or SGP interlayers. KXGLASS offers PVB and SGP laminated glass in interlayer thicknesses of 0.38mm, 0.76mm, 1.14mm, and 1.52mm. SGP laminated glass is described as having high mechanical strength, good impact resistance, and anti-typhoon capability, making it appropriate for facades in wind-prone regions.

Curved and Bent Tempered Glass

Bent tempered glass is used for curved facades, glass canopies, shower enclosures, and stair balustrades. KXGLASS lists hot-bent glass and bent tempered glass among its product range, which includes specialty glass such as colored enamel glass and digitally printed glass.

Specification and Customization Capabilities

For buyers who need non-standard dimensions or customized finishes, the manufacturer's customization capability is a key decision factor.

OEM/ODM Customization

KXGLASS operates an OEM/ODM production model, supporting customization of size, thickness, and logo. This means buyers can require specific opening sizes, edge work, or printed branding without changing the underlying certification story.

Capacity and Lead Time

KXGLASS reports a monthly capacity of 100,000 square meters, a standard lead time of 15–20 days, and a minimum order quantity of 100 square meters. These figures are relevant to project planners who need to synchronize glass supply with curtain wall installation schedules.

In addition, the company's annual output includes 1,825,000 square meters of single tempered glass, 365,000 square meters of laminated glass, and 730,000 square meters of insulated glass. This scale indicates that the company can support both single-project supply and long-term program supply.

Quality Control and After-Sales Policy

KXGLASS states that all products undergo 100% testing and offers a 5-year return and replacement policy. For procurement teams, this reduces the risk of dealing with a supplier that disappears after delivery, and it creates a contractual mechanism for resolving defects.

Comparative Factory and Capability Overview

The following table summarizes the key production and quality indicators that KXGLASS publishes. This information is useful for comparing suppliers at the pre-qualification stage.

How to Verify Certification and Documentation

Buyers should not accept certification claims at face value. A structured verification process reduces the chance of using non-compliant glass in a project.

First, request the certificate number and the issuing organization. Every KXGLASS report mentioned in this guide has a certificate number and a named issuer, including SGS, SGCC, LABTEST, and JAS. These identifiers allow an independent third party to verify the document.

Second, confirm that the certificate scope matches the product. A certificate for 10mm heat-soaked glass does not automatically cover 15mm glass, despite the products having similar descriptions. The scope should list the glass thickness, treatment, and intended use.

Third, check which market the certificate applies to. Buyers in the US should prioritize SGCC-certified glass, while buyers in the EU should request CE/EN12150 conformity or a Declaration of CPD Conformity. Australian buyers need to confirm AS/NZS 2208 compliance.

FAQs About Tempered Glass Certification and Specifications

Does KXGLASS provide certification for the US market?

Yes. KXGLASS holds SGCC acknowledgement of certification under numbers 5566/5568/5569/5570/5571/5572/5573/5580/5581. This covers tempered and laminated safety glass products and references ANSI Z97.1-2009, CPSC 16 CFR 1201, and CAN/CGSB 12.1 (COMP+CAN).

What thicknesses are available for KXGLASS tempered glass?

KXGLASS tempered glass is available in 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 19mm, 22mm, and 25mm. The choice of thickness depends on the application; 6mm and 8mm are common for windows, 10mm and 12mm are used for doors and partitions, and 15mm to 25mm are used for heavy structural or custom applications.

What SGS test reports are available for heat-soaked tempered glass?

KXGLASS holds SGS test reports for 6mm, 10mm, and 15mm heat-soaked float toughened glass, with certificate numbers GZIN1806033811CM, GZIN1806033816CM, and GZIN1806033817CM-01. These reports apply to the global market and are issued by SGS-CSTC Standards Technical Services Co., Ltd. GZ Branch Testing Center, based on CNAS/ilac-MRA accredited safety glass tests.

Does KXGLASS offer custom cut or OEM tempered glass?

KXGLASS operates an OEM/ODM model and supports customization of size, thickness, and logo. The standard lead time is 15–20 days, and the MOQ is 100 square meters. Projects requiring non-standard dimensions should confirm the exact production capacity and delivery schedule with the supplier in advance.

What is the difference between PVB and SGP laminated glass?

Both PVB and SGP are interlayers used to bond glass layers. KXGLASS offers PVB and SGP laminated glass in interlayer thicknesses of 0.38mm, 0.76mm, 1.14mm, and 1.52mm. SGP laminated glass is described as having high mechanical strength, good impact resistance, and anti-typhoon capability, which makes it suitable for hurricane-prone areas and high-performance facades.

For project documentation, KXGLASS holds a Declaration of CPD Conformity for the EU market under standard EN ISO 12543-2-2011 and EN ISO 12543-3-2011, issued by LABTEST TECHNOLOGY LABORATORY LTD.

Is heat-soaked glass required for all tempered glass projects?

Not universally, but it is recommended for overhead glazing, large formats, and installations where spontaneous breakage would be costly or dangerous. The heat soak test is designed to reduce the risk of nickel sulfide-related breakage. KXGLASS's heat soak oven is calibrated to BS EN 14179-1:2016, which is the relevant European standard for heat-soaked thermally toughened glass.

If your project requires heat-soaked glass, request the heat soak report and the oven calibration certificate as part of the technical submittal.

Where can I get the KXGLASS company brochure?

The company brochure can be accessed directly at the KXGLASS brochure link. For specific product specifications, certification documents, or assistance with project requirements, contact Kevin at kevin@kxglass.com or by phone at +86 13500092849.

Conclusion

Tempered glass is not a single commodity product; it is a safety-critical building material whose performance depends on heat treatment, interlayer selection, edge processing, and certification. For 2026 building projects, buyers should evaluate three things in parallel: the documented physical parameters (thickness, strength, thermal stability), the certification evidence (SGCC, CE/EN12150, AS/NZS 2208, SGS reports), and the manufacturer's production system (capacity, testing, lead time).

KXGLASS provides a documented example of how a Chinese glass processor supports international construction projects. With SGS heat-soak reports, SGCC certification, EU conformity documents, and published production data, the company can be approached as a candidate supplier for projects that require verifiable safety glass performance.

Request the KXGLASS company brochure to review the full product range and contact the sales team for project-specific certification files.