This standard specifies the essential requirements for compatibility and interchangeability of borosilicate glass plant, piping and fittings from DN 15 to DN 1000.

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This European Standard specifies material, design, inspection, testing and marking requirements of pressure equipment (e.g. vessels, pipes, valves) made from borosilicate glass 3.3 with a coefficient of mean linear thermal expansion of (3,3 +/- 0,1) x 10-6 K-1. The following are excluded: - circular, flat and tubular sight glasses, - equipment made from borosilicate glass with another coefficient of thermal expansion.

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