1.Copper Solder Ring Coupling 2.Standard:EN1254, BS864-2, ASME ... (F-32) F=9/5C+2 CEL(°c) FAH(°F)1.Material: Red Copper2.Specification: 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1 ... , ASME B16.22GB/T11618-1999BS864/EN1254ASME/ANSI B16.22DIN28564.Advantage:(1)Ningbo Jiekelong Precision Manufacturing Co.,Ltd Established in 1998,was ...