BS 7331:1990
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for direct surfaced wood chipboard based on thermosetting resins
Hardcopy , PDF
01-01-2006
English
11-30-1990
Committees responsible
Foreword
Specification
1. Scope
2. Definitions
3. Classification
3.1 General
3.2 Fire performance
4. Appearance
4.1 Colour matching
4.2 Surface finish
4.3 Surface defects
5. Dimensional tolerances
5.1 Thickness
5.2 Length and width
5.3 Flatness
5.4 Edge straightness
5.5 Squareness
6. Physical properties
7. Marking
Appendices
A. Determination of thickness
B. Determination of length and width
C. Determination of flatness
D. Determination of edge straightness
E. Determination of squareness
F. Determination of susceptibility to cracking
G. Determination of surface resistance to water vapour
Tables
1. Classification of direct surfaced wood chipboards
2. Tolerances for thickness
3. Physical properties
Figures
1. Suitable instrument for measuring flatness
2. Determination of edge straightness
3. Determination of squareness
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