Spectacle Blind Flanges

Listing ID #4285463

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Supply Type Manufacturer, Exporter, Supplier
Preferred Buyer Location All over the world

Separating one part of a line from another requires a spectacle blind, able to switch from closed to open and back again. Bleed rings provide a means to release pressure from the pipe through a....

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Product Details

Separating one part of a line from another requires a spectacle blind, able to switch from closed to open and back again. Bleed rings provide a means to release pressure from the pipe through a controlled opening.

Materials used:

Stainless Steel:
ASTM A182 F304/304L, F316/316L, F316H,F316Ti,F321,F44(UNS S31254)

Key Features:
Can be attached to the pipe without welding (sometimes an additional seal weld is used as well) Ideal for higher pressure and temperature applications for small pipe sizes
Not recommended for larger loads, especially when subjected to higher torque

Uses of threaded flanges:
Threaded flanges can be fitted to pipes of various sizes without welding and this is one chief benefit for which these flanges are highly demanded.
They can be used in extremely high pressure applications, particularly at or near atmospheric temperature, where the necessary post weld heat treatment is not possible.
They are ideal for small diameter piping applications.
They are economical and time saving devices.
These threaded flanges are normally designed for non-cyclic applications.
The flanges are suitable to be used in applications where welding is hazardous.
They can be used in highly explosive areas.
These types of flanges are made from plate, and come in 3 different types.

The first and most widely used type are spec blinds – short for spectacle: these are flanges with two equal outside diameter (OD) parts welded together by way of a ‘bridge’. One of the parts also contains an inside diameter (ID), while the other is a blank, or blind. A whole is put at the halfway mark of the bridge. These are also called spectacles, figure 8’s, and figure 8 blanks, because of their resemblance to reading glasses (spectacles) and figure 8’s. These are referred to as ‘Line Blanks’ in the ASME/ANSI standards.

The second and third types are quite similar: both have longer bridges, referred to as ‘paddles’, which resemble longer handles. One type has only an OD, and so is a blind plate – similar in appearance to a large pizza oven peel. These are referred to as paddle blinds. The other type is exactly the same but comes with an ID as well, enabling flow-through when installed in a piping system. These pieces have holes in the paddle which enables field personnel to determine by sight which piece is installed in a system. These are referred to as paddle spacers, and are often supplied in sets together with the paddle blinds.

All 3 types of these flanges are used in piping systems or pressure vessels where the flow needs to be interrupted from time to time. They are installed between two pipe flanges (as specified above), and by way of a screw inserted into the hole in the bridge or paddle, they are able to rotate or ‘swing’ into and out of position to interrupt or allow the flow, as the user sees fit.

Company Details

We Pioneer Forge & Fittings, was incepted in 1999 and known as a manufacturer of butt-weld ,socket weld and forged fittings in stainless Steel, alloy steel, carbon steel, nickel alloys.
Our products have found various applications in different industrial requirements, including -Oil & Gas, Chemical, Petrochemical, Power Plant, Pulp & Paper, Environmental & Water Projects, Engineering Projects and more.
Through regular and consistent supply of our products at industry leading prices, we have established ourselves a reliable player in the industry.
We Manufacture, includes - elbows, tees & cross, reducers, caps & stub ends, couplings, flanges IN ALL CLASS AND STANDARDS, nipples ,dairy fittings valves , as per party required forgings like rings ,square blocks, circles and all, flanges, socket weld threaded fittings, Steel pipe fittings, carbon steel pipe fittings, forged pipe fittings. We have the capability and expertise to design these products in different metal alloys and in a variety of specifications to fulfill the various requirements of our clients.
We work with the core objective of providing maximum customer satisfaction and are committed to continuously improve the quality of our products & services, to create value for our customers. Whether big or small, we respect all our clients and every care is taken to give them a pleasant and hassle-free business experience. We deliver our orders in bulk as well as economic order quantities and as a rule, the quality of our products and services always remains the same, regardless of specification or quantity desired.
Evolving ourselves with time, we have secured a special place for ourselves within the industry as well as among our clients in the domestic as well as international markets.
Manufacturing facilities in house:
10,000 sq ft Manufacturing Floor
Module assembly area has 24ft clear height
The entire facility is climate controlled year round to maintain the cleanliness of our forging areas.
CNC Machine, V M C machines, lathes drills and all machineries which are used for fittings and forgings.
All polishing operations are confined to specific work areas that are equipped with air handling and filtration systems.
All tools are dedicated to stainless steel and higher alloys
Dedicated office space for final product inspection teams with wireless internet access
Networked AutoCAD system with vaulted document control system and daily backup
Vision
To achieve maximum customer satisfaction and set highest standards in manufacturing, product development and all other domains of our business. To be an industry leader in all our operations.
List of Codes & Standards available with Us ASTM Standards - ED 2005 - Section - Iron & Steel Products Vol. 01.01 Steel - Piping
Tubing Fittings
ASME / ANSI B16.9 - 2004 Factory - Made Wrought Steel Butt welding Fittings
ASME / ANSI B16.5 - 1998 Pipe Flange and Flanged Fittings
ASME / ANSI B16.11 - 2004 Forged Fittings, Socket - Welding and Threaded
We also manufacture customized Fittings depends upon the requirements of our clients based in Saudi Arabia, Kuwait, Turkey, United Arab Emirates, Oman, Egypt, Indonesia, Malaysia, Singapore, Thailand, West Africa & Latin America, at Pioneer Forge & Fittings
We stand behind our products, a team of our experienced engineers, we dedicate for complex & strict defined requirements, we have manufactured fittings based on complex drawings where many companies have refused to manufacture the same to our customers because of their complexity & requirements of special grades, Pioneer Forge & Fittings is Centrally located in Ahemdabad, Gujarat which is most developed state of INDIA.
Mission
Provide technically sound solutions and create additional value in mutual interest with our customers resulting in being a preferred manufacturer within the manufacturing industry.