UNE EN 10253-4
UNE EN 10253-4 (Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements)· UNE (Spain) · 50 materials
UNE EN 10253-4 (Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements)· UNE (Spain) · 50 materials