Different Types of Flanges

Weld Neck Flange

• ASME B16.5 weld neck flanges gives the high level of joint integrity as it is butt-welded with a pipe. WNRF flanges creating a strong and seamless connection best for high pressure service like oil & gas applications. Welding neck flanges Available in FF, RF, or RTJ face type.

Long Welding Neck Flange

• ASME B16.5 Long weld neck flange is extended neck flange. LWNRF flanges used as a self reinforcing nozzle for piping systems. Long welding neck flange provides extra length and stability.

Slip On Flange

• SORF flange has a hole with matching outside diameter of pipe. They welded both outside and inside. SO flange is suitable for low temperature application. Slip on flanges is available in large sizes (60″).

Threaded Flange

• Threaded flange is also called screwed flange. ASME B16.5 threaded flange is generally used in water and air. They not suitable for high temperature applications and high pressure applications. They available in NPS 4″. Screwed flange come in FF and RF.

Socket Weld Flanges

• Socket weld flange have a female socket in which the fitted pipe. ASME B16.5 socket weld flange used in small bore piping. SWRF flange suitable for low pressure application. They come in FF and RF face.

Blind Flange

• ASME B16.5 blind flange also called blank flanges. BLRF flange is installed at the end of a piping system. blind flange is a blank disc with a bolt hole. They come in 1/2″ to 60″ Sizes with all types of face types.

Spectacle Blind Flange

• ASME B16.48 spectacle flanges create a water tight seal between pipe and pressure level. Spectacle flange minimizing the risk of environmental pollution. They also called figure-8 blind. Spectacle blind flanges make from hard wearing materials such a stainless steel and carbon steel.

Lap joint Flange

• Lap joint flange has 2 components loose backing flange and stub end. LJRF flange provides better joining due to buttwelding. ASME B16.5 lap joint flange not suitable for small size.

Reducing Flange

• ASME B16.5 Reducing flange is used in change in pipe size. Reducing pipe flange consists of one specific diameter with small diameter size of bore. Reducing flange are come in in threaded, SORF, and weld neck end.

Square Flange

• ASME B16.5 square flanges are used in hydraulic systems to pipe to pipe connection. This flanges come in different working pressure like a 210kg/cm², 280kg/cm² and 350kg/cm². Square pipe flange available in 1/4″ to 6″.

Expander Flange

• ASME B16.5 expander flange same to a long weld neck flange but increases the pipe size to the first or second long size. These expander pipe flange are specially designed for corrosive environments.

Orifice Flange

• Orifice flanges are used measuring the flow rate of either gases or liquids. Orifice plate flange available in all grades and material under ASME B16.36 with ring type joint or raised face face. ANSI B16.36 orifice flange are come in class 300 to class 2500.

Plate Flange

• ASME B16.5 plate flange is a circular and flat metal disc. Plate welding flange made from stainless steel or carbon steel for welded onto the end of a pipe to create a connection for bolting. Flat face plate flange suitable for low pressure application.

Puddle Flange

• ASME B16.5 puddle flanges also called leak control flanges. Puddle flange is a flat and circular disk device installed around a pipe. Puddle pipe flange is to prevent water from seeping through the gap between the pipe and surrounding structure.