The composite fire-proof glass has been divided into three grades, namely grade A, grade B and grade C. next, let's briefly talk about the standard of fire-proof glass.

The purchased fire-proof glass has the type inspection report of the qualified inspection organization recognized and authorized by the state, and the product certificate of the quality inspection department of the manufacturer.

Allowable deviation of size, thickness and appearance of fireproof glass.

The bow curvature of composite fire-proof glass shall not exceed 0.3%, and the waveform curvature shall not exceed 0.2%.

The thickness of fireproof glass shall be measured with a micrometer. The measurement results show that the average value of 4 points is accurate to 0.1mm.

For more news about composite fireproof glass, please click: http://www.dgfaiee.com