Spectacle blind flange
Negotiable Min Order Quantity Unit
- Required Quantity
-
- Place of Origin
- Payment Terms
- Negotiable
- Production method
- Negotiable
- Shipping / Lead Time
- Negotiable / Negotiable
- Keyword
- spectalce blind flange
- Category
- Flanges
GZY Pipe Fitting Industries
- Country / Year Established
-
China
/
- Business type
- Others
- Verified Certificate
-
14
| Product name | Spectacle blind flange | Certification | - |
|---|---|---|---|
| Category | Flanges | Ingredients | - |
| Keyword | spectalce blind flange | Unit Size | - |
| Brand name | - | Unit Weigh | - |
| origin | Stock | - | |
| Supply type | - | HS code | 721069 |
Product Information
Spectacle Blind FlangesKeywrods: Spectacle Blind Flanges, Spectacle Blind Flange, Spectacle Flanges, Spectacle Blind Flanges manufactory
- 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:
- Carbon Steel: ASTM A105, A350 LF1,LF2 CL1/CL2 LF3 CL1/CL2, ASTM A694 F42,F46,F48,F50,F52,F56,F60,F65,F70
- Stainless Steel: ASTM A182 F304/304L, F316/316L, F316H,F316Ti,F321,F44(UNS S31254)
- Alloy Steel: ASTM A182 F1,F5/a,F9,F11,F12,F22,F91
- Duplex&Super Duplex Steel: ASTM A182 F51/UNS S31803,F53/UNS S32750 F55/UNS S3260
- Special Alloy Steel: Monel400,Inconel 600, Inconel 625, Inconel 800, Inconel 825, chrome-moly
- 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 | Negotiable | Shipping time | Negotiable |
- President
- Sam
- Address
- No. 273, Siping Road, Shanghai, 200081, China
- Product Category
- Flanges,Pipe Fittings,Valves
- No. of Total Employees
- 101-500
- Company introduction
-
- GZY was founded by a group of many years experienced specialists with products developing, designing, producing management and quality control.
- Our mills are certified by ISO 9001:2000 and PED 97/23/EC,we are supplying only good quality, traceable inspection and reliable delivery. We are aleading manufacturer of specialized Pipe Fittings, Flanges, Valves meeting National / International Standardssuch as ASTM / ASME, JIS, IBR and NACE, from Carbon Steel, Alloy Steel and Stainless Steel Materials. Our products are used for water processing, power, ship-building, Petroleum, Chemical, Power, Gas, Metallurgy, Shipbuilding, Construction, etc.
- The depth of back-up inventory in our branches and distribution nods gives us the strategic advantage for providing a high levelcustomer service across a broad geography.
- Connecting Everything!
- A pipeline world of safe with GZY Pipefitting.
- Main Markets
-
Antarctica
Taiwan
Tanzania
Thailand
Togo
Tunisia
U. Kingdom
U.S.A
Zimbabwe
- Main Product
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