GB/T 25994-2010Honeycomb ceramics (English PDF)
蜂窝陶瓷
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
January 10, 2011
Implementation date
October 1, 2011
Scope
GB/T 25994-2010 is the English-translated version of 蜂窝陶瓷.
GB/T 25994-2010 is the Chinese standard "Honeycomb ceramics". Its scope clause reads: This standard specifies the terms and definitions honeycomb ceramic products, classification marks, technical requirements, test methods, inspection rules, marking, packaging and Storage and transportation.
This standard is mainly used in automobile exhaust purification ceramic honeycomb catalyst carrier, ceramic honeycomb for other purposes can also be implemented by reference. Its clauses include terms and definitions; classification, marking.
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Document preview — GB/T 25994-2010
National Standard of the People's Republic of China
- ICS
- 81.060.30
- Classification
- Q 32
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 classification, marking
- 5 2 Technical Requirements
- 6 Test Method
- 7 Inspection rules
- 8 signs, packaging, transportation and storage
- Appendix B (normative) isostatic strength test
- Annex C (normative) Test method for thermal shock resistance
1 Scope
This standard specifies the terms and definitions honeycomb ceramic products, classification marks, technical requirements, test methods, inspection rules, marking, packaging and
Storage and transportation.
This standard is mainly used in automobile exhaust purification ceramic honeycomb catalyst carrier, ceramic honeycomb for other purposes can also be implemented by reference.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Strength test method GB/T 1964 porous ceramic compression
GB/T 3810.3-2006 Test methods of ceramic tiles - Part 3. water absorption, apparent porosity, apparent relative density and bulk density
Determine
GB/T 16535 Fine Ceramics linear thermal expansion coefficient Test Method jack method
GB/T 21650.1 mercury porosimetry and gas adsorption of solid materials the pore size distribution and porosity Part 1. Mercury
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Hole density celnumber
The number of pore distribution on the ceramic honeycomb per unit cross-sectional area, in units of the number of holes/cm2.
3.2 Softening temperature
Honeycomb ceramic heating process its equilibrium temperature of the square hole initial deformation.
3.3 A-axis direction Aaxis
Ceramic honeycomb channel parallel direction.
3.4 B-axis direction Baxis
Ceramic honeycomb channel perpendicular and parallel to the direction of the hole wall.
3.5 C-axis direction Caxis
Ceramic honeycomb and perpendicular to the cells and the cell walls of a 45 ° angle direction.
4 classification, marking
4.1 Categories
Products divided into three categories according to the cross-sectional shape, the shape shown in Figure 1.
GB/T 31703-2025 | GB/T 27979-2011 | GB/T 25995-2010 | GB/T 47610-2026 | GB/T 25999-2010 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 29914-2025Oxidation catalysts for diesel vehicle exhaust purification
- JB/T 13202.1-2017Diesel engines - Particulate filter systems - Part 1: General technical requirements
- JB/T 13202.4-2017Diesel engines - Particulate filter systems - Part 4: Technical requirements for diesel particulate filters
- NB/T 51012-2014Regenerative oxidizer for coal mine ventilation air methane
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