NP EN 10253-3
NP EN 10253-3 (Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements)· NP (Portugal) · 50 materials
NP EN 10253-3 (Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements)· NP (Portugal) · 50 materials