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DIN 21057-11
Pipe classes for process plants - Part 11: Technical delivery conditions for pipe components of austenitic stainless steels of material group 8.1
DIN 21057-10
Pipe classes for process plants - Part 10: Technical delivery conditions for pipe components of non-alloyed and alloyed steel with specified properties at elevated temperatures of material group 1.1
DIN 21057-12
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
DIN EN 10253-1
Butt-welding pipe fittings - Part 1: Wrought carbon steel for general use and without specific inspection requirements; German and English version prEN 10253-1:2025
DIN EN 10253-3
Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements; German and English version prEN 10253-3:2025
prEN 10253-3
Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
prEN 10253-1
Butt-welding pipe fittings - Part 1: Wrought carbon steel for general use and without specific inspection requirements
DIN EN 10253-4
Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements; German version EN 10253-4:2025
EN 10253-2/FprA1
Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements
DIN EN 10253-2/A1
Butt-welding pipe fittings - Part 2: Non alloy and ferritic alloy steels with specific inspection requirements; German version EN 10253-2:2021/FprA1:2025
