DIN EN 10253-4
DIN EN 10253-4 (Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements)· DIN (Germany) · 52 materials
DIN EN 10253-4 (Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements)· DIN (Germany) · 52 materials