Nine Piping Solutions is a known trading, exporting, supplying and manufacturing unit of Alloy Steel F91 Pipe Flanges, which is easy to clean and does not tend to pick up odours. Therefore, Alloy Steel F91 Slip On Flanges is approved for use in acid production and concentration, along with the transport of such substances.

Most steels like Alloy Steel F91 Threaded Flanges are first melted in electric – arc or basic oxygen furnaces and subsequently refined in another steelmaking vessel, mainly to lower the carbon content. In the argon – oxygen decarburization process, a mixture of oxygen and argon gas is injected into the liquid alloy of Alloy steel 91 flanges.