... PSB,long lifetime 4.CE,API,ISO certificates Cast Iron Flange blow down valve :Widely used for gas transmission ... ~ 750 °C, covering carbon steel, low carbon steel, stainless steel, duplexstainless steel, high temperature alloys steel, MONEL, INCONEL, Hastelloy, titanium ... machining center, machining center, gantry processingcenter, large-scale Ball Lathe , horizontal boring and milling machine, etc.; ...