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 It is now superseded by EN 1092-1, but it remains in use for the dimensions of light duty, economy stainless steel flanges in applications where corrosion resistance and hygiene,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
Manufacturing Standards of ASTM A182 Flanges ASME/ANSI B16.5 Blind Flange, High Hub Blind Flange, Slip on Flange, Welding Neck Flange, Socket Weld Flange, Ring Type Joint Flange, Lap Joint Flange, Threaded Flange PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500 ASME/ANSI B16.47 Blind Flange [Series A & B],Welding Neck Flange PRESSURE CLASS 75, 150, 300, 400, 600, 900 ASME/ANSI B16.36 Orifice Flange PRESSURE CLASS 300, 400, 600, 900, 1500, 2500 BS 4504 SEC 3.1 Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange, Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, PRESSURE CLASS PN 2.5 TO PN 40 BS 4504[PART 1] Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange, Welding Neck Flange, Hubbed Slip-On Hubbed Threaded, PRESSURE CLASS PN 2.5 TO PN 400 BS 1560 BOSS Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange, Welding Neck Flange, Hubbed Slip-On Hubbed Threaded, PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B16.5 Blind Flange, High Hub Blind Flange, Slip on Flange, Welding Neck Flange, Socket Weld Flange, Ring Type Joint Flange, Lap Joint Flange, Threaded Flange PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500 ASME/ANSI B16.47 Blind Flange [Series A & B],Welding Neck Flange PRESSURE CLASS 75, 150, 300, 400, 600, 900 ASME/ANSI B16.36 Orifice Flange PRESSURE CLASS 300, 400, 600, 900, 1500, 2500 BS 4504 SEC 3.1 Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange, Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, PRESSURE CLASS PN 2.5 TO PN 40 BS 4504[PART 1] Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange, Welding Neck Flange, Hubbed Slip-On Hubbed Threaded, PRESSURE CLASS PN 2.5 TO PN 400 BS 1560 BOSS Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange, Welding Neck Flange, Hubbed Slip-On Hubbed Threaded, PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500 BS10 Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange TABLE D, E, F, H DIN FLANGES DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673 PRESSURE CLASS PN 6 TO PN 100
A threaded flange is a type of flange that uses a screw thread to connect the flange to a pipe. A male thread is cut onto a pipe end whilst a female thread is cut into the bore of the flange; the male threaded pipe is then screwed into the female threaded flange. Threaded flanges are available in a variety of sizes and pressure ratings, and are typically made from Various Materials. Technical Specifications 1. Materials: Carbon steel, stainless steel, alloy steel, 2. Size: �½ inch to 24 inches 3. Classes: 150, 300, 400, 600, 900, 1500, 2500 4. Thread type: NPT, BSP, BSPT, BSPP 5. Face type: Flat, Raised and Ring Joint 6. Dimensions: ANSI B16.5, ASME B16.47, Advantages of Threaded Flanges: A. Easy to install and maintain B. No welding required C. Suitable for a variety of applications D. Available in a variety of sizes and pressure ratings Applications: Threaded flanges are used in a variety of applications, including: a. Water and wastewater systems b. Oil and gas pipelines c. Chemical processing plants d. HVAC systems e. Fire protection systems
A spectacle blind flange is a safety device used to isolate a section of pipeline or equipment when they need to be inspected or removed from piping system. It is not like a valve, the spectacle blind flange is a permanent or long term isolation block. The spectacle blind flange is made of two pieces metal discs which are joint together by a part of steel handle. The two discs are connected by a hinge, so that the blind flange can be rotated to open or close the pipeline. Technical Specifications a. Material: Carbon steel, stainless steel, alloy steel b. Standard: ASME B16.47 c. Face type: Raised face (RF), flat face (FF), ring type joint face (RTJ) d. Size: 12/â?? to 24â?? e. Pressure rating: 300,600,900,1500,2500 Lbs Features A. Easy to install and remove B. Permanent or long term isolation C. Cost-effective alternative to isolation valves D. Wide range of materials and sizes available Applications A. Pipelines B. Process equipment C. Boilers D. Tanks E. Vessels Benefits 1. Safety: Prevents accidental release of fluids or gases 2. Cost-effectiveness: More affordable than isolation valves 3. Convenience: Easy to install and remove 4. Durability: Made from high-quality materials
DIN Standard Flanges are a type of flange that is manufactured to the DIN (Deutsches Institut Normung) standard. DIN flanges are available in a variety of styles, including slip-on, weld-neck, blind, threaded, and socket weld. They are made from a variety of materials, including carbon steel, alloy steel, and stainless steel. DIN flanges are used in a wide range of applications, including industrial piping systems, pressure vessels, and boilers. Technical Specifications A. Pressure rating: From PN6 to PN40. B. Temperature rating: From -20'C to +250'C. C. Material: Carbon Steel, Alloy Steel, and Stainless Steel. D. Finish: DIN flanges are available in a variety of finishes, including hot dip galvanized, painted, and stainless steel. Applications DIN Standard Flanges are used in a wide range of applications, including: 1. Industrial piping systems 2. Pressure vessels 3. Boilers 4. Tanks 5. Valves 6. Fittings Advantages Some of the advantages of DIN Standard Flanges include: I. They are manufactured to a high standard of quality. II. They are available in a variety of styles and materials. III. They are compatible with a variety of other piping components. IV. They are relatively easy to install and maintain.
Carbon steel flanges are a type of flange that is made of carbon steel. Carbon steel is a type of steel that contains carbon as its primary alloying element. Carbon steel flanges are typically used in applications where strength and durability are important. They are also relatively inexpensive, making them a cost-effective option for many applications. Technical Specifications 1. Material: Carbon steel 2. Size: �½ Inch to 24 Inch 3. Type: RF, FF, RTJ 4. Pressure rating: Class 150 to 2500 5. Temperature range: -200�°F to 1200�°F 6. Finish: Black, mill scale, or hot dipped galvanized 7. Dimensions: ANSI/ASME B16.5, DIN 2533, or MSS SP-44 Applications a. Oil and gas pipelines b. Chemical processing plants c. Power plants d. Water treatment facilities e. HVAC systems Advantages 1. Strength 2. Durability 3. Inexpensive 4. Wide variety of applications
Mild Steel Flanges are a type of flange made from mild steel. Mild steel is a low-carbon steel that is strong and ductile, making it a good choice for flanges that need to be able to withstand high pressures and temperatures. Mild Steel Flanges are typically used in a variety of industries, including the oil and gas industry, the chemical industry, and the water treatment industry. Technical Specifications 1. Material: Mild Steel 2. Size: ½ Inch to 24 Inch 3. Type: RF, FF, RTJ 4. Pressure rating: Class 150 to 2500 5. Carbon Content: 0.05%-0.25% 6. Yield Strength: 370 MPa 7. Tensile Strength: 440 MPa 8. Hardness: 126 Brinell 9. Temperature Rating: Up to 500�°F 10. Dimensions: ANSI/ASME B16.5, DIN 2533, Other Features Mild Steel Flanges are available in a variety of sizes and styles, including slip-on flanges, weld neck flanges, and socket weld flanges. They can also be finished in a variety of ways, including hot dip galvanizing, painting, and powder coating. Applications a. Oil and gas industry b. Chemical industry c. Water treatment industry d. Power generation industry e. HVAC industry f. Marine industry Advantages A. Strong and ductile B. Affordable C. Widely available D. Easy to fabricate E. Can be finished in a variety of ways
A ring joint flange is a type of flange that uses a metal ring to create a leak-proof seal between two pipes. The metal ring is placed in a groove on the face of the flange and is compressed when the bolts are tightened. This compression creates a tight seal that prevents the flow of fluids or gases between the pipes. Material: Carbon Steel, stainless steel, nickel alloy Size: 1" to 24" Pressure rating: 150# to 2500# Class: ANSI Class 150, 300, 600, 900, 1500, 2500 Standard: ANSI B16.5, API 6A, DIN EN 1092-1 Ring joint flanges are a reliable and effective way to create a leak-proof seal. They are used in a variety of applications where a high level of safety and reliability is required.
A BLRF flange, or blind raised face flange, is a type of flange that is used to blank off the end of a pipe. It is a flat plate with a raised face, and it has all the necessary bolt holes for installation. BLRF flanges are typically made from steel, stainless steel, or alloy steel, and they are available in a variety of sizes and pressure ratings. Technical Specifications: Type: Blind Raised Face Material: Carbon Steel, Stainless Steel, or Alloy Steel Nominal pipe size (NPS): 1/2" to 24" Flange pressure class: 150 to 2500 Standard: ASME B16.5 or ASME B16.47 Facing: Raised face Bolt holes: ANSI #10 or #12 Finish: Black, mill finish, or hot dipped galvanized Applications: Piping systems Valves Pumps Tanks Pressure vessels Instrumentation Advantages: They are strong and durable. They are easy to install. They are available in a variety of sizes and materials. They are cost-effective.
