BS 4991:1974
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for propylene copolymer pressure pipe
Hardcopy , PDF
31-08-2022
English
29-03-1974
Cooperating organizations
Foreword
Specification
1. Scope
2. Composition
3. Designation of dimensional characteristics
4. Classification of pipe
5. Dimensions
6. Physical characteristics
7. Frequency of testing and retests
8. Marking
Appendices
A. Method for the determination of thiodipropionate
compounds
B. Method for the determination of toluene extract of
carbon black
C. Heat reversion test
D. Short-term hydrostatic test (batch test)
E. Long-term hydrostatic test (type test)
F. Tensile test
G. Test for impact strength at 0 deg C
H. Equivalent values of maximum sustained working
pressures
Tables
1. A guide to working pressures at various temperatures
and working life times with water
2. Dimensions
3. Short-term hydrostatic test pressure
4. Number of lines for 'round the clock' testing
5. Mass of striker
Figures
1. Examples of satisfactory dispersion of carbon black
2. Examples of unsatisfactory dispersion of carbon
black
3. Suitable impact testing machine
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