UNE - Spanish national standards

WOOD COILS FOR GROUND CONDUCTORS ZINC-PLATED STEEL CABLES IN OVERHEAD TRANSMISSION LINES.

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Pumps - Shaft sealing systems for centrifugal and rotary pumps (ISO 21049:2004)

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Road vehicles - Dimethyl Ether (DME) refuelling connector (ISO 21058:2019)

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Anodizing of aluminium and its alloys - Determination of mass per unit area (surface density) of anodic oxidation coatings - Gravimetric method (ISO 2106:2019)

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Footwear - Chemical tests - General principles on the preparation of samples (ISO 21061:2021)

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Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 1: General information, terminology and sample preparation (ISO 21068-1:2024) (Endorsed by Asociación Espanola de Normalización in June of 2024.)

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Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 2: Determination of volatile components, total carbon, free carbon, silicon carbide, total and free silicon, free and surface silica (ISO 21068-2:2024) (Endorsed by Asociación Espanola de Normalización in August of 2024.)

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Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 3: Determination of nitrogen, oxygen and metallic and oxidic constituents (ISO 21068-3:2024) (Endorsed by Asociación Espanola de Normalización in August of 2024.)

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Chemical analysis of raw materials and refractory products containing silicon-carbide, silicon-nitride, silicon-oxynitride and sialon - Part 4: XRD methods (ISO 21068-4:2024) (Endorsed by Asociación Espanola de Normalización in August of 2024.)

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Determination of boron (III) oxide in refractory products - Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes (ISO 21078-1:2008) (Endorsed by AENOR in March of 2008.)

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