Alloy steel orifice flanges are pipe flanges designed for high-pressure applications. Orifices, which are narrow holes or slots that connect two pipes, control the flow of fluids and gases passing through them. ANSI B16.5 Alloy Steel Orifice Flanges use this same design for high-pressure piping systems. The body of the flange is made from an alloy steel material that has been heat-treated for additional strength and durability. This ensures the parts can withstand even higher pressures without breaking down or leaking fluid/gas during operation. These components can also be coated with corrosion-resistant materials like paint/powder coatings to improve their overall thermal efficiency and reduce any wear they may experience due to harsh environmental conditions, such as those found in chemical processing plants or offshore drilling sites.