This part of the code provides the general requirements, testing methods, and acceptable tolerances for glazed fire-clay sanitary appliances. It is primarily used by manufacturers, quality control inspectors, and procurement engineers to ensure that heavy-duty fire-clay sinks, urinals, and basins meet durability, chemical resistance, and aesthetic standards.
Glazed Fire-Clay Sanitary Appliances: Part-1 General Requirements
Quick Reference Values
Inspection distance for visual defects600 mm under normal daylight
Dimensional tolerance (dimensions >= 100 mm)± 4 percent
Dimensional tolerance (dimensions < 100 mm)± 5 percent
Practical Notes
Glazed fire-clay appliances covered here are heavier, thicker, and more porous than vitreous china (IS 2556). They are typically used for heavy-duty applications like laboratory sinks or large institutional washbasins.
Always perform the visual inspection for blemishes (like pinholes, spots, and blisters) strictly from the standard 600 mm distance under diffused daylight to avoid subjective rejections.
Ensure sampling for destructive tests like crazing and water absorption is done according to the specified lot sizes to avoid unnecessary material wastage.