Duplex steel flanges are available in different specifications to meet the specific requirements of different industries. The most common specifications for duplex steel flanges are:

Material: Duplex steel flanges are made from different grades of duplex steel such as UNS S31803, UNS S32205, and UNS S32750.
Size: Flanges are available in different sizes, ranging from 1/2 inch to 48 inches.
Pressure rating: Flanges are designed to withstand different pressure ratings, ranging from 150 to 2500 pounds per square inch (PSI).
Facing type: Flanges can be manufactured with different facing types such as flat face, raised face, and ring joint face.

Types of Duplex Steel Flanges:

Duplex steel flanges come in a variety of types to meet the specific needs of different applications. Here are some of the most common types of duplex steel flanges:

Weld Neck Flanges: These flanges are designed to be welded to a pipe. They have a long tapered hub, which provides an excellent stress distribution on the pipe.

Slip-On Flanges: These flanges are easy to install and are ideal for low-pressure applications. They slide over the end of the pipe and are then welded in place.

Socket Weld Flanges: These flanges are designed to be welded to a pipe using a socket weld connection. They are commonly used in high-pressure applications.

Blind Flanges: These flanges are used to seal off the end of a pipe or valve. They are commonly used in piping systems where maintenance is required.

Threaded Flanges: These flanges are designed to be screwed onto a pipe. They are commonly used in low-pressure applications.

Lap Joint Flanges: These flanges are used with a stub end, which is welded to the pipe. The flange then slips over the stub end.

Applications of Duplex Steel Flanges:

Duplex steel flanges are used in a wide range of applications in various industries. Here are some of the most common applications of duplex steel flanges:

Oil and Gas Industry: Duplex steel flanges are commonly used in the oil and gas industry for pipeline connections and valve connections, where high strength and corrosion resistance are required.

Petrochemical Industry: Duplex steel flanges are used in the petrochemical industry for pipeline connections and equipment connections in corrosive environments.

Chemical Industry: Duplex steel flanges are used in the chemical industry for pipeline connections and equipment connections where high resistance to stress corrosion cracking and pitting is required.

Conclusion:

Duplex steel flanges are an essential component in the oil and gas, petrochemical, and chemical industries. They are used to connect pipes, valves, and other equipment together to create a reliable and leak-free system. At Bullion Pipes, we offer a wide range of high-quality duplex steel flanges to meet the needs of our customers. Our flanges are designed to meet the strictest industry standards and are available in different specifications and types.