Alloy Steel Pipe are for high pressure and high Temerature Service. Alloy steel are type of steel which has one or more elements besides carbon intentionally added to produce a desired physical property or characteristic. Common elements that are added to make alloy steel are molybdenum, manganese, nickel, silicon, boron, chromium, and vanadium. Alloy Steel Pipe are also Know as Crome Moly Pipe.