Specialty flange

A Specialty flange is a component with a flanged joint that has the same bolting structure as a standard flange, but a specialty flange has its own characteristics.

Except the most used standard flanges, there are still a number of specialty flange such as:

Spectacle Blind Flange
Spectacle Blind Flange
Spectacle Blind Flange consist of a connected ring (spacer) and a plate (spade).
Long Weld Neck Flange
Reducing Flange
Reducing Flange is used on projects that require the fitting together of different sized pipes.
Weldoflange, Nipoflange
Weldoflange / Nipoflange
Weldoflange / Nipoflange is a combination of a Welding Neck flange and a supposedly Weldolet or Nipolet.
Orifice Weld Neck Flanges
Orifice Flanges
Orifice Flanges generally come with either Raised Faces or RTJ (Ring Type Joint) facings.
Screwed Flanges
This flange is referred to as either threaded or screwed.
Expander Flange
Expander Flange
Expander Flange is using a separate reducer-welding neck flange combination.
Anchor flange
Anchor flange
An anchor flange is a device installed on a pipeline to combat axial movement.
Large Diameter Flanges
Large Diameter Flanges
The large diameter flange is used to connect or to block off two very large diameters sized pipes.
NW Long Weld Neck Flanges
NW Long Weld Neck Flanges
Long weld neck flange(LWN flange) is also call integral flange, it means a welding neck flange has a very long neck.
The Packing Works for Steel Flanges

Steel flanges must be packed with seaworthy packing method then delivery to customers, usually the packing way include wooden box, wooden pallet, iron & steel cage, iron & steel pallet etc.

Because of the normal wooden boxes or wooden pallets have to do fumigation treatment, we usually use plywood pallet or plywood case or box to pack steel flanges without fumigation treatment.

Whatever plywood or iron & steel packing way, they must be seaworthy, strong, waterproof and easy for loading and unloading.

Most common flange types

Regardless of custom sizing or specifications, the fundamental design of most flanges falls under six common styles created to close, connect, cover, or support pipes and pipe systems.


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