Gives the minimum values for expected strength as a function of time and temperature in the form of reference lines, for use in calculations on polybutene pipes.
ISO 12230:1996 history
2012ISO 12230:2012 Polybutene-1 (PB-1) pipes - Effect of time and temperature on the expected strength
1996ISO 12230:1996 Polybutene (PB) pipes - Effect of time and temperature on the expected strength