... : Main material of our forgings include various superalloys and duplex stainless steels. eg. Inconel, Monel, Incoloy, Hastelloy, and Duplex F53 etc ... .2). Product included: Balls, rods, tubes, sleeves, bushings, rings etc.3). Available forms: Finished or blank products.4). Remarks ... -base alloys, Iron-base alloys, and Cobalt-base alloys ,etc. Stainless steel valve stem brass valve stem