ISO/TC 33 - Refractories

Standardization of raw materials and products of the refractories industry and their properties.

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This committee contributes with 28 standards to the following Sustainable Development Goals:

Published ISO standards *

ISO standards under development *

Participating members

Observing members

* number includes updates

Reference	Title	Type
ISO/TC 33/WG 17	Chemical analysis	Working group
ISO/TC 33/WG 25	Refractory test piece preparation – Gunning techniques	Working group
ISO/TC 33/WG 27	Test methods for refractory mortars	Working group
ISO/TC 33/WG 31	Phase quantitative analysis of residual quartz in silica bricks	Working group
ISO/TC 33/WG 32	Test methods for dense shaped refractories	Working group

The committees below can access the documents of ISO/TC 33:

Reference	Title	ISO/IEC
ISO/TC 24/SC 8	Test sieves, sieving and industrial screens	ISO
ISO/TC 163/SC 1	Test and measurement methods	ISO
ISO/TC 206	Fine ceramics	ISO

ISO/TC 33 can access the documents of the committees below:

Reference	Title	ISO/IEC
ISO/TC 24	Particle characterization including sieving	ISO
ISO/TC 24/SC 8	Test sieves, sieving and industrial screens	ISO
ISO/TC 71/SC 1	Test methods for concrete	ISO
ISO/TC 146/SC 2	Workplace atmospheres	ISO
ISO/TC 206	Fine ceramics	ISO

Acronym	Title	Category
PRE	European Refractories Producers Federation	A
WRA	World Refractories Association	A
EC - European Commission	European Commission	B
UNESCAP	United Nations Economic and Social Commission for Asia and the Pacific	B
WCO	World Customs Organization	B

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