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Figure-8 Blanks,Spectacle Blind Flange

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Place of Origin: China

Brand name: Sunny Steel

Payment Terms: D/P,L/C,T/T

Production method: Negotiable

Shipping / Lead Time: Negotiable / Negotiable

Keyword: figure-8 blanks, spectacle blind flange, spectacle blind flanges manufactory

Category: Flanges

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Yosin Steel Pipe Co., ltd.

Membership: BIZ

Country / Year Established: China / 2000

Business type: Manufacturer

Verified Certificate: 11

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PRODUCT DESCRIPTION COMPANY INFORMATION Related Products

Product name	Figure-8 Blanks,Spectacle Blind Flange	Certification	-
Category	Flanges	Ingredients	-
Keyword	figure-8 blanks , spectacle blind flange , spectacle blind flanges manufactory	Unit Size	-
Brand name	Sunny Steel	Unit Weigh	-
origin	China	Stock	-
Supply type	-	HS code	7307

Product Information

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A figure-8 blank (also called a Spectacle Blind Flange) is a pressure-retaining plate with one solid end and one open end connected with a web or tie bar.

Specifications:

Size: 1/2 to 60inch, DN 12mm to DN 1500mm

Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250

Facing: RF / RTJ

Cabon steel: A105, A350 LF2

Stainless steel: A182 F304/F304L/F316/F316L/F321

Alloy steel: F11, F12

Packing: plywood case and plywood pallet

Keywrods: Spectacle Blind Flanges, Spectacle Blind Flange, Spectacle Flanges, Spectacle Blind Flanges manufactory

Special bland flange

Standards, Dimensions & Weight

ASME B16.48 Class 150

ASME B16.48 Class 300

ASME B16.48 Class 600

ASME B16.48 Class 900

ASME B16.48 Class 1500

ASME B16.48 Class 2500

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. Our spec blind flanges are available with raised, flat, or RTJ faces.

B2B Trade

Price (FOB)	Negotiable	transportation	-
MOQ	Negotiable	Leadtime	Negotiable
Payment Options	D/P,L/C,T/T	Shipping time	Negotiable

Yosin Steel Pipe Co., ltd.

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Country / Year Established: China / 2000

Membership: BIZ

Business type: Manufacturer

President: Manager

Address: No.903,North ZhongShan No.1 Road, Shanghai, 200235, China

Product Category: Pipe Fittings,Steel Pipes

Year Established: 2000

No. of Total Employees: 101-500

Company introduction: <p>

Yosin Steel. is a leading distributor of various steel pipe, which focuses on export and service of seamless pipes, alloy steel tubing, and pipe fittings.

Through years of development by focusing on customers' specific needs on applied in petroleum, chemical, power, boiler, and machinery industries abiding to the requirement and specifications. Yosin Steel gained a good fame among buyers and laid firm foundation for further growth. To meet and provide flexible, customized products, Yosin Steel established joint plant and partner mills located at Jiangsu province, where it focuses on manufacturing seamless pipes and tubes. The steel pipes are produced according to international advanced standard such as API, ASTM(ASME), DIN and JIS etc.

Yosin Steel have a strong, experienced and expertise sales team. We are not only being able to export steel pipes and fittings to our customers with the best quality and competitive prices, but also provides global service of Steel Tube&Pipe solution.

To grantee excellent quality, Yosin Steel participates in and supervises each step from raw material purchasing , processing, quality checking and packing , making sure all efforts result in good quality products. The following products within Yosin Steel supplying capacity is: seamless pipes, seamless tubes, alloy steel tubing for mechanical industry, pipe fittings for connection. All the products can be made exactly as per buyer's requirement or your order, customized products and service to satisfy your development .

We sincerely hope to establish long-term cooperation relationship with you on the basis of mutual benefit, reciprocity and common development!

Yosin Steel have a strong, experienced and expertise sales team. We are not only being able to export steel pipes and fittings to our customers with the best quality and competitive prices, but also provides global service of Steel Tube&Pipe solution.

For further information or a quote from Yosinsteel please contact us by fax, email, or using our contact form.

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