Integral Flange

Specifications include a wide range of sizes, material thicknesses, and pressure ratings
Grades and Specifications
- MS Flanges (HSN Code: (730721),(73079190) in various grades such as IS 2062, ASTM A105, ASTM A36,ASTM A106,E 350 C,EN1092
- MS Circles (HSN Code: (720851),(73079190) in IS 2062, ASTM A36.
- MS Plates (HSN Code: (720851),(73079190) available in IS 2062, ASTM A3.
- 73072100: Pipe Fittings of Iron or Steel- 73079300: Carbon Steel Butt-Weld� Fittings
Grades of CS Flanges:
ASTM A105: Forged carbon steel.
ASTM A350 LF2: Low-temperature applications.
ASTM A516 Gr. 70: Pressure vessels.
ASTM A694: High-pressure use.
HSN Code:
7307.21: Flanges of iron/steel (non-stainless).
7307.29: Other pipe fittings of iron/steel.

Types of Flanges by M.R.A.C Steel Product
Slip-On Flanges
Commonly used for low-pressure applications. Easy to install and cost-effective.
Weld Neck Flanges
Ideal for high-pressure applications. Provides excellent structural integrity.
Blind Flanges
Used to seal off pipelines or create a stop. Designed for safety and reliability.
Socket� Weld Flanges
Suitable for small pipes and high-pressure systems. Ensures secure welding.
Lap Joint Flanges
Best for applications requiring frequent disassembly. Used with stub ends.
Threaded Flanges
Quick installation without welding. Suitable for small pipe sizes.
Spectacle Blinds
Two-in-one design for stopping flow or allowing it. Easy to use for maintenance.
Reducing Flanges
Designed for connecting pipes of different diameters. Ensures smooth flow.
Industries Served

*WE ALSO MANUFACTURE MATERIAL AS PER CUSTOMER REQUIRMENTS*

We manufacture flanges in a variety of sizes and material standards. We have a large stock of carbon steel, alloy steel and stainless steel flanges. We can also manufacture your specific flange requirements within a short lead time. Changhao is a leading steel flanges exporter and manufacturer in China and we produce most of our carbon steel flanges and stainless steel flanges for export from China to the world.

Steel flanges are available in a variety of shapes and sizes to suit different applications. Flanges are usually in the shape of a disc and are used to connect two pipes together or to connect pipes to pressure vessels, valves, pumps, integral flange assemblies or other components. Flanges have bolt holes around the rim. The bolts are used to connect two flanges, which are usually attached to the pipe end with a gasket in between.

Flanges come in a variety of shapes, such as threaded (the pipe is screwed onto the flange), weld neck (the pipe is welded to the collar of the flange), socket weld (fillet weld connection), lap joint (connection at the short end used)), sliding, etc. The flange can also be used to cover or close the plate at the end of the pipe. This is called a blind flange. Therefore, flanges are considered to be internal components used to support mechanical parts.

The ASME B16.5 and ASME B16.47 codes cover American standard pipe flanges and the EN 1092-1 code covers European steel flanges.

Flanges can be manufactured and designed for specific pressure ratings; 150 lb, 300 lb, 400 lb, 600 lb, 900 lb, 1500 lb and 2500 lb.

EN 1092-1 flanges are circular steel flanges that are used in piping systems. They are specified by their pressure class (PN), nominal size (DN), and flange type. The pressure class indicates the maximum pressure that the flange can withstand, and the nominal size indicates the inside diameter of the pipe that the flange is designed for. The flange type refers to the shape of the flange face and the method of attachment to the pipe.

The EN 1092-1 standard specifies the following flange types:

Type 01: Plate flange for welding
Type 02: Loose plate flange with weld-on plate collar
Type 03: Weld neck flange
Type 04: Loose flange with weld-neck collar
Type 05: Blind flange
Type 21: Integral flange
Type 31: Weld neck flange with raised face
Type 32: Weld-on plate collar with raised face
Type 33: Blind flange with raised face
Type 34: Socket weld flange
Type 35: Socket weld flange with raised face

The EN 1092-1 standard also specifies the materials that can be used for EN 1092-1 flanges, the surface finish of the flange faces, and the tolerances for the dimensions of the flanges.

Here are some of the key technical specifications of EN 1902-1 flanges:

Nominal sizes: DN 10 to DN 4000
Pressure classes: PN 2.5 to PN 400
Materials: Carbon steel, stainless steel, ductile iron
Facings: Raised face (RF), flat face (FF), ring joint (RJ), tongue and groove (TG)
Dimensions and tolerances: Defined in EN 1902-1
Marking: Defined in EN 1902-1

EN 1092-1 flanges are used in a variety of applications, including water, gas, and oil pipelines, as well as in chemical and process industries. They are a reliable and versatile type of flange that can be used in a wide range of conditions.

Slurry pump accessories flange usually refers to several fixed holes opened around a disk-like metal body for connecting other components. Flanges are widely used in various mechanical equipment and pipeline connections. There are also many types of flanges. Next we talk about the standard system of flanges.
my country's national standard system for steel pipe flanges GB.
1. Nominal pressure: 0.25Mpa~42.0Mpa
Series 1: PN1.0, PN1.6, PN2.0, PN5.0, PN10.0, PN15.0, PN25.0, PN42 (main series)
Series 2: PN0.25, PN0.6, PN2.5, PN4.0
Among them, the flange sizes of PN0.25, PN0.6, PN1.0, PN1.6, PN2.5, and PN4.0 belong to the European flange system represented by German flange, and the rest are American flange sizes. The American flange system represented by Lan.
In the GB standard, the maximum nominal pressure level belonging to the European flange system is 4Mpa, and the maximum nominal pressure level belonging to the American flange system is 42Mpa.
2. Nominal diameter: 10mm~4000mm
3. Structural form of flange:
Integral flange Unit flange
threaded flange;
Welding flange, butt welding flange;
Flat welding flange with neck, socket welding flange with neck, plate flat welding flange: loose sleeve flange, loose sleeve neck flange with butt welding ring, loose sleeve plate flange with butt welding ring, loose sleeve flat welding ring Plate flange, plate over loose flange
Flange cover (blind hole flange).
4. Flange sealing surface: flat surface, concave surface, concave and convex surface, tongue and groove surface, ring connection surface
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Threaded flanges are not suitable for pipelines with thin wall thicknesses because it is difficult to cut threads on such pipelines.

Description
Threaded flanges are designed to use threads to connect flanges to piping. Threaded flanges are used to connect pipes together in a safe, leak-free manner. They are often used in industrial pipelines where the flow of fluids or gases needs to be carefully controlled. Threaded flanges are designed to screw onto the end of a pipe, creating a tight seal that prevents leaks and ensures that the pipe operates at maximum efficiency. In addition to being used to connect pipes together, threaded flanges can also be used to connect other piping components such as valves, pumps and fittings. This makes them a versatile component that can be used in a variety of different piping configurations.

Threaded flanges are typically made from materials such as carbon steel, stainless steel or alloy steel. The material used will depend on the specific requirements of the pipeline and its operating environment.

The main advantage of threaded flanges is that they do not require welding to connect to the pipe. The ability to form joints without welding is a considerable advantage and is critical in certain locations and industries such as gas stations, hexane plants, flammable liquid stores, and other explosive areas (Ex zones). If welding is not required, the potential source of ignition has been removed. Another advantage is that threaded flange fittings are faster and easier to assemble and disassemble than welded flange fittings.



Threaded flanges are not suitable for pipes with thin wall thicknesses, as it is more difficult to cut threads on such pipes. In some cases, sealing welds can be used to improve the integrity of the flange and reduce the potential for leakage. Adding a seal weld increases the integrity of the flange, but it also makes the joint more difficult to assemble and disassemble (because the weld makes it a permanent joint).

Threaded flanges are not suitable for pipelines with thin wall thicknesses because it is difficult to cut threads on such pipelines.

Description
Threaded flanges are designed to use threads to connect flanges to piping. Threaded flanges are used to connect pipes together in a safe, leak-free manner. They are often used in industrial pipelines where the flow of fluids or gases needs to be carefully controlled. Threaded flanges are designed to screw onto the end of a pipe, creating a tight seal that prevents leaks and ensures that the pipe operates at maximum efficiency. In addition to being used to connect pipes together, threaded flanges can also be used to connect other piping components such as valves, pumps and fittings. This makes them a versatile component that can be used in a variety of different piping configurations.

Threaded flanges are typically made from materials such as carbon steel, stainless steel or alloy steel. The material used will depend on the specific requirements of the pipeline and its operating environment.

The main advantage of threaded flanges is that they do not require welding to connect to the pipe. The ability to form joints without welding is a considerable advantage and is critical in certain locations and industries such as gas stations, hexane plants, flammable liquid stores, and other explosive areas (Ex zones). If welding is not required, the potential source of ignition has been removed. Another advantage is that threaded flange fittings are faster and easier to assemble and disassemble than welded flange fittings.



Threaded flanges are not suitable for pipes with thin wall thicknesses, as it is more difficult to cut threads on such pipes. In some cases, sealing welds can be used to improve the integrity of the flange and reduce the potential for leakage. Adding a seal weld increases the integrity of the flange, but it also makes the joint more difficult to assemble and disassemble (because the weld makes it a permanent joint).

Threaded flanges are designed to use threads to connect flanges to piping. Threaded flanges are used to connect pipes together in a safe, leak-free manner. They are often used in industrial pipelines where the flow of fluids or gases needs to be carefully controlled. Threaded flanges are designed to screw onto the end of a pipe, creating a tight seal that prevents leaks and ensures that the pipe operates at maximum efficiency. In addition to being used to connect pipes together, threaded flanges can also be used to connect other piping components such as valves, pumps and fittings. This makes them a versatile component that can be used in a variety of different piping configurations.

Threaded flanges are typically made from materials such as carbon steel, stainless steel or alloy steel. The material used will depend on the specific requirements of the pipeline and its operating environment.



The main advantage of threaded flanges is that they do not require welding to connect to the pipe. The ability to form joints without welding is a considerable advantage and is critical in certain locations and industries such as gas stations, hexane plants, flammable liquid stores, and other explosive areas (Ex zones). If welding is not required, the potential source of ignition has been removed. Another advantage is that threaded flange fittings are faster and easier to assemble and disassemble than welded flange fittings.



Threaded flanges are not suitable for pipes with thin wall thicknesses, as it is more difficult to cut threads on such pipes. In some cases, sealing welds can be used to improve the integrity of the flange and reduce the potential for leakage. Adding a seal weld increases the integrity of the flange, but it also makes the joint more difficult to assemble and disassemble (because the weld makes it a permanent joint).

BS 4504 is an obsolete British Standard that specifies the dimensions and tolerances of flanges and bolting for pipes, valves, and fittings. It is now superseded by EN 1092-1, but it remains in use for the dimensions of light duty, economy stainless steel flanges in applications where corrosion resistance and hygiene, rather than high pressures and temperatures, are the primary considerations.

BS 4504 covers four types of flanges:

Plain flanges
Boss flanges
Integrally cast or forged flanges
Weld neck flanges
The flanges are available in a variety of materials, including carbon steel, stainless steel, alloy steel, and copper. They are also available in a variety of pressure ratings, from PN6 to PN40.

The technical specifications of BS 4504 flanges are as follows:

Nominal size: DN10 to DN400
Pressure rating: PN6 to PN40
Material: Carbon steel, stainless steel, alloy steel, copper
Finish: Plain, raised face, grooved
Bolting: DIN 2566 or BS 3692
BS 4504 flanges are used in a variety of applications, including:

Water and wastewater treatment
Chemical processing
Food and beverage processing
Pharmaceutical manufacturing
Power generation
Oil and gas