Chrome-nickel Stainless Steel Ball Valve Manufacturer in China: Forged Steel Ball Valve, Chrome-nickel Stainless Steel Body, Bonnet, DN40-DN600, PN16-PN64. Name: Chrome-nickel Stainless Steel Forged Steel Ball Valve. Size: DN40-DN600. Working Pressure(MPa): PN16 to PN64. Working Temperature(�¢??): �¢?�¤180. Body & Bonnet: Carbon Steel Or Chrome-nickel Stainless Steel. Ball, Stem: Chromium, Chrome Nickel, Chromium Nickel Molybdenum Stainless Steel or Chrome-nickel Stainless Steel. Sealing Ring: Flexible Graphite Gasket, 316 + Flexible Graphite Gasket. Filler: Teflon.