ansi b16.5 long weld neck flanges

Long Weld Neck Flange


Reducing Flange

reducing flange

Spectacles Blind Flange

Contact Form Demo (#3)


Elite Piping Manufacture Co., Ltd
Spectacles Blind Flange

A spectacle blind flange is a type of specialty flange used in piping systems for isolation purposes. It is made up of two metal discs that are attached together with a central web or handle, creating a single component that can be used to isolate a section of pipe or equipment.

Spectacle blind flanges are typically used in situations where temporary or permanent isolation is required, such as for maintenance, repair, or testing of piping systems. They are designed to be easily installed or removed, without the need for tools or special equipment.

One side of the spectacle blind flange is a solid blind flange, which is used to block or close off the pipe. The other side is a spacer, which is used to maintain the correct spacing between the pipe flanges, ensuring that the piping system is aligned and properly supported.

Spectacle blind flanges are available in a range of sizes and pressure ratings and can be made from a variety of materials such as carbon steel, stainless steel, and alloy steel. They are typically designed with a raised face or flat face and are installed using a gasket to provide a leak-tight seal.

Spectacle blind flanges are an important component in many piping systems, allowing for the safe and efficient isolation of sections of pipe or equipment, without the need for costly shutdowns or lengthy downtime.

Figure 8 is a kind of pipe fittings, mainly for the convenience of maintenance. You can know the specific shape by painting the upper part of the “8” black. It is half blind and half iron ring. It is often used for pipeline flanges that need to change the process. The materials are mainly carbon steel, stainless steel, and alloys, which can be selected according to the pipeline pressure level and pipeline medium.

Rich production technology, advanced equipment, high automation degree and high production precision, complete molding. As the designated supplier of major energy enterprise groups under the jurisdiction of SASAC, the company has won a number of national, and provincial reputations.

Additional information


ASTM A182, Alloy Steel.


Widely used in Petrochemical, Coal Chemical, Refining, Oil and Gas Transmission, Marine Environment, Power, Heating and Other projects


DIN 2656, DIN 2635, EN1092-1.



Molding Process

Through the forging process, using mold forming, and then through machining to complete the product processing.


150LB-2500LB (PN20-PN420).

Surface Treatment

Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint, Zinc, Hot dipped Galvanized.


No Fumigate or Fumigate Plywood/Wood Pallet or Case


F11, F22.



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