... casting A,B,C,D,E,F,DC,DP type good quality,outlook and price stainless steel ... coupling Type A,B,C,D,E,F,DC,DP.1.manufacturer2.stainless steel precision investment casting3.CNC precisely ... machined.A Couplingcamlock coupling1.size:1/2"-6".2.body:stainless steel 304 316. ... oil,petroleum,chemical,water,gas7.thread:ANSI B1.20.1(NPT), BS21,DIN259,DIN2999,ISO228 stainless steel quick ...