Blind flanges are used to seal the ends of piping systems. It is a round plate with no central fixation but with all the appropriate bolt holes. Available in a variety of sizes and materials, blind flanges are used to provide a reliable closure at the end of a pipe, valve or equipment nozzle. When sealed, the flange facilitates easy access to the line. Blind flanges are sometimes custom made or machined to accept pipes of reduced nominal size.

The specification of Carbon Steel Blind Flange ASME B16.5

Sample Picture:

1. Blind flange 2. Stud Bolt 3. Gasket 4. Other flange

Details of Blind flange

Size: 1/2” to 60”, DN 12mm to DN 1500mm
Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250
Facing: RF / RTJ

Material:

Carbon steel: A105, A350 LF2

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

Alloy steel: F11, F12

Specifications:

Blind flange is put at the end of pipe or at the junction that would possibly be a future expansion into that direction.

ASME/ANSI B16.5 Class 150 BL / Class 300 / Class 600 / Class 900 / Class 1500 / Class 2500

ASME B16.47 Series A/MSS SP-44 Class 150 BL / Class 300 / Class 600 / Class 900

ASME B16.47 Series B/API 605 Class 75 BL / Class 150 /Class 300 / Class 600 / Class 900

DIN 2527 PN10 / PN16

What is the function of blind flange?

Blind flanges can be used to repair pipes farther away. In fact, during pipeline construction, blind flanges may be installed in the final length of the pipeline. This allows the pipe to be extended or continued by adding to the final flange. Without blind flanges, it is nearly impossible to repair or perform continuous maintenance on the line unless the flow is closed at an earlier valve, which can affect miles of line.

The surface treatment of carbon steel blind flange:

Black painting, yellow painting, anti-rust oil, and epoxy are all surface treatments for flanges. Generally if the customers don’t have special request, anti-rust oil is the commonly used.

The package of Welding Neck Flanges:

Generally the packages of flanges include plywood case and pallet. If customer have special requests the customized packaging is also available.

PN16 stainless steel Forged Blind flange is a kind of forging flange. The forging flange is generally lower than the casting flange carbon low is not easy to rust, forging streamline, the organization is more compact, mechanical properties than casting flange, can withstand higher shearing force and tensile force. However, the forging cost is higher than that of casting flange, and there will be large or uneven grains, hardening crack phenomenon.
PN16 Stainless Steel Forged Blind flange is also called blind Plate, is called the practice of blue cover, is the middle without holes in the flange, for sealing the pipe plug use, the form of sealing surface is more, there are plane, convex, concave-convex surface, tenon groove surface, ring connection surface, it is the middle without hole flange, used for plugging pipe mouth, the function and head and cap is the same.

But the PN16 Stainless Steel Forged Blind flange seal is a detachable sealing device, the sealing head is not ready to open again, the form of sealing surface more, there is a plane, convex, concave-convex surface, tenon groove surface and Ring connection surface, the material has carbon steel, stainless steel, alloy steel, copper, aluminum, PVC and PPR and so on.
PN16 Stainless Steel Forged Blind flange isolation, cut off, and head, pipe caps, welding plug the role of the same, because of its good sealing performance, the need for complete isolation of the system, flange manufacturers generally as a reliable means of isolation.

PN16 Stainless Steel Forged Blind flange is a solid circle with a handle, used in the normal condition of the system in isolation, and 8 words Blind board, shape like 8 words, one end is blind board, the other end is throttle ring, but the diameter and pipe diameter is the same, does not have throttle effect, 8 words Blind board, easy to use, need to isolate, use blind plate end, need normal operation, the use of throttle ring, but also can be used to fill the tube on the blind plate installation clearance, another feature is obvious, easy to identify the installation state.

Beijing Metleader Pipeline Technology Inc. Is leader manufacturer and supplier of all kinds of pipe flange, such as carbon steel blind flange,so flange,wn flange and socket weld flanges. As a pioneer and leader in the manufacturing industry,We constantly innovate processing technology to adapt to the changes of the times. According to the application of different places to provide customers with the corresponding pressure flange.
We are one of the eminent manufacturers and exporter of high Grade DIN and ASME B16.5 Carbon Steel BLIND FLANGES .

Blind pipe flanges square measure pipe flanges accustomed seal the tip of a piping system or pressure vessel openings to forestall flow. Blind pipe flanges square measure usually used for pressure testing the flow of liquid or gas through a pipe or vessel. Blind pipe flanges conjointly permit quick access to the pipe within the event that employment should be done within the road. Blind pipe flanges square measure usually used for top pressure applications. put on Pipe flanges with a hub have printed specifications that vary from 1/2″ via 96″. Coastal projection provides Blind pipe flanges altogether material grades, specifications and sizes.

Carbon steel blind flange detail information:
Material:Carbon steel
Standard: ASME,DIN,JIS ,AWWA flange and so on.
Size:1’’-48’’
Flange hole:8
Wall Thickness:SCH1.,20.30.40.80.120.160,STD,XS,XXS
CLASS:150#,300#,400#,600#,900#,1500#,2500#
Package:wooden box
Payment method:T/T,LC

Another type pipe flange:

plate flange	stainless steel slip on flange	carbon steel weld neck flange	lap joint flange	carbon steel threaded flange

Our carbon steel A105 sliding flanges are suitable for non critical conditions because they have low carbon content. However, our carbon steel A105N SWRF flange is “standardized” flange, which can provide better performance. We also provide various carbon steel ASTM A105 flanges, such as ASTM A105 sliding flanges, carbon steel welded flanges, carbon steel sleeve welded flanges, A105N carbon steel blind flanges, carbon steel Kong Falan, A105 carbon steel glasses blind flange, A105 thread / threaded flange, carbon steel reducing flange, ASTM A105N carbon steel ring joint flange (RTJ), etc.

Metleader is one of the largest exporters, manufacturers and suppliers of carbon steel flanges in China. Our products are designed with the best technology and precise design. These flanges have some excellent properties, such as wear resistance, anti plastic deformation, crack resistance, total crack resistance, good machinability and grinding ability, good fabric performance, strong and solid structure, durable, plastic deformation, durability, and high tensile strength. These flanges are used under the supervision of professional people. The best quality materials are developed. In order to meet the diverse needs of customers, we provide products of various specifications. Our CS flanges are available for our valuable customers, with different customized diameters, wall thickness and sizes at a market leading price.
We can provide all you need on the pipe line.
Email:flange@metleader.com