DIN 21057-12:2017-04 Pipe classes for process plants - Part 12: Technical delivery conditions for pipe components of non alloyed and alloyed steel with specified properties at elevated temperatures of material group 1.2 and 5.1
2017DIN 21057-12:2017-04 Pipe classes for process plants - Part 12: Technical delivery conditions for pipe components of non alloyed and alloyed steel with specified properties at elevated temperatures of material group 1.2 and 5.1
2017DIN 21057-12:2017 Pipe classes for process plants - Part 12: Technical delivery conditions for pipe components of non alloyed and alloyed steel with specified properties at elevated temperatures of material group 1.2 and 5.1