... 21, 31), Nickel alloys, stainless steel, duplex, etc. Valve Seat Ring Main material of our products: Stellite, Hastelloy, Monel ... Sheet, Plate, Bar, rods,Pipe , Tube (welded & seamless), Wire, Fittings)HastelloyB3( Sheet, Plate, Bar, rods,Pipe , Tube (welded & seamless), ... Sheet, Plate, Bar, rods,Pipe , Tube (welded & seamless), Wire, Fittings)Nimonic ,Nimonic 263 ( Sheet, Plate, Bar, rods,Pipe , Tube ...