welded pipe fittings 1.High quality 2.Competitive price 3.Materials: ... steel valve and sanitary fittings as follows:1.butterfly valve:welded butterfly valve,threaded butterfly valve,clamp butterfly valve,three pcs ... .2.sanitary diaphragm valve,aseptic diaphragm valve.3.check valve:welded check valve,clamp check valve,threaded check valve.4.fittings ...