... Elbow Fittings Material: 99.99% copper ISO9001:2008 ASTM,B88,EU STANDARD 90 Degree Copper Elbow Fittings90 Degree Copper Elbow Fittings ... with ASTM B88,EU,America Standard Material: 99.99% copper ASTM,B88,EU STANDARD 90 Degree Copper Elbow Fittings ... also the ASME/ANSI B 16.22 standard. ASTM,B88,EU STANDARD 90 Degree Copper Elbow Fittings