SupplyDuctile iron(GGG50) resilient seat non rising stem gate valve,PN10/16,F5,,body:ductile iron(GGG50), stem X20Cr13,Stem nut:Brass,wedge:ductile iron coated by NBR,blue epoxy coating 250micron thick,RAL5015 or RAL5017.with ductile iron handwheel,galvanized steel 8.8 bolts.