Metal Type Vavle Guards it is used high pressure or high temperature，Metal type flange guards(valve Guards) max pressure 240 bar(inside have wire meshes）.coil
so it design high pressure and high temperature chemical corrossion fluid.
materical : carbon steel (Galvanized steel ) it is suit for 460 ℃
stainless steel(304 or 316L) is suit for 700 ℃
