... cylinders, Pipe moulds are all we can supply. Forged ringkey words: steel forged ring,forged part, Foring products Material Alloy steel : Nitralloy ... (forged), Rough Machined, Semi-Finish Machined Certification:API, ASTM, GB, DIN, BS, NF, JIS, ISO and the customized standard. ... We could provide you qualified Forged ring with competitive price. If you have ...