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304/304L Flange Supplier

Siddhagiri Metals and Tubes, an ISO Certified supplier, exporter and manufacturer of Stainless Steel 304 and 304L Flanges. We have a huge inventory of ASTM A182 F304 and ASTM A182 F304L Flanges.
Other Names: ASTM A182 F304, ASTM A182 UNS S30400/UNS S30403, Stainless Steel 304/304L Flanges, AISI 304/304L Stainless Steel Flanges
Material: AISI 304 / 304L Stainless Steel
Brand: Siddhagiri Metals and Tubes
Manufacturer: Siddhagiri Metals and Tubes
Rating: 4.6/5 based on 71 customer reviews

AISI 304/304L Stainless Steel Flange Supplier · ASTM A182 F304/F304L UNS S30400/S30403

AISI 304/304L Stainless Steel Flange supplied by Siddhagiri Metals and Tubes are of best quality and highly corrosion-resistant. Our ASTM A182 F304/F304L Flange inventory is available in random lengths or cut to specific lengths to meet your exact requirements. Over the years, we have gained unique experience with pipes for different applications. We control the manufacturing process from raw material to finished product, with a constant focus on quality to meet demanding specifications.

A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together. The principle of a flange is to apply a mechanical force by using bolts to preload the gasket until contact stress between flanges and gasket is sufficient to maintain a seal. Connection to the pipe is by welding or threading. To allow easy functionality and inter-changeability, these ASTM A182 UNS S30400/S30403 Flanges are designed to have standardised dimensions which include ANSI, ASME, DIN, EN, BS, JIS. Stainless Steel 304/304L Flanges have major applications in Oil, Gas, Petrochemical, Ship-Building, Marine, Food, Dairy, Railways and other associated industries were piping systems are required.

Stainless Steel 304/304L Slip On Flange — AISI 304/304L Slip-On Flanges is slightly larger than the outer diameter of the pipe it is to be used with. The pipe is slipped into the Flange prior to welding both inside and outside. We supply a wide range of SS 304/304L Slip-On Flanges in different dimensions and sizes.

Stainless Steel 304/304L Blind Flange — AISI 304/304L Flange with no borehole are known as AISI 304/304L Blind Flange and used to close the end of the pipe. SS 304/304L Blind Flanges are supplied as threaded or welded from class 150lb to 2500lb.

Stainless Steel 304/304L Weld Neck Flange — AISI 304/304L Weld Neck Flanges are widely used in high-pressure piping systems and can be easily recognised by the long tapered hub. The size of the bore hole is usually equal to the size of the pipe.

Stainless Steel 304/304L Socket Weld Flange — AISI 304/304L Initially developed for small high-pressure piping systems a Socket Weld Flange is similar to Slip On Flange. SS 304/304L Socket Weld Flange is installed by welding around the hub of the flange.

Stainless Steel 304/304L Threaded Flange — AISI 304/304L Threaded Flanges are used for special application where the flange can be assembled to the piping system by without welding. We specialise in all forms of SS 304/304L Threaded Flanges and can supply it in multiple size range.

Stainless Steel 304/304L Lap Joint Flange — AISI 304/304L Lap-Joint Flanges are similar to Slip-On flanges and are generally used with Lap-Joint Stubs. This type of SS 304/304L Lap-Joint Flange is highly used where the piping systems are disassembled from time to time.

Siddhagiri Metals and Tubes supplies AISI 304/304L Stainless Steel Flanges in different sizes and pressure ratings. Our production stock of Stainless Steel 304/304L Flanges includes size range from 1/2” to 24”, 26” to 60”, 1” to 24”, 1/2” to 24”, 12” to 60”, 26” to 48”, 21/16” to 30”, DN10 to DN3600. We have an inventory of flanges rating from Class 150 to 2500 Lbs, Class 300 to 2500 Lbs, Class 150 to 2500 Lbs, Class 150 to 900 Lbs, Class 150 to 600 Lbs, 2000 Psi to 20000 Psi, PN6 to PN 160. Our AISI 304/304L Flanges conform to international dimension standards such as ASME / ANSI B16.5, ASME B16.47 / API 605, ASME / ANSI B16.36, ASME B16.48 / API 590, MSS-SP-44, BS 3293, API 6A and DIN. We stock various types of flanges which include Slip On Flange, Blind Flange, Weld Neck Flange, Socket Weld Flange, Threaded Flange, Lap Joint Flange.

We have an extensive inventory of multiple stainless steel 304/304L flanges and alloy 304/304L flanges to compliment our pipe products. Most of our high quality, 304/304L flanges and gasket kits are ready to ship upon request. Speak to one of our specialists and find out which 304/304L flanges to meet your flange and piping specifications. We have partnered with the best flange brands around the world to meet your flange requirements. We also stock 304/304L flanges from Ulma — Spain, Metalfar Flanges Italy, Mellesi — Italy, Massoti — Italy. Moreover, we are SAUDI ARAMCO approved supplier of 304/304L flanges and provide all documents including Mill Certificate along with the shipment. Our primary export destinations include Russia, Australia, UK, Germany, US, Saudi Arabia, Qatar, Jordan, South Africa, Thailand, Canada, Mexico, Brazil and much more.

  • Flange Specification: ASTM A182 F304, ASME SA182 UNS S30400, ASTM A182 F304L, ASTM A182 UNS S30400/S30403 & EN 1.4301
  • Dimension Standard: ASME / ANSI B16.5, ASME B16.47 / API 605, ASME B16.48 / API 590, MSS-SP-44, BS 3293, API 6A, DIN DN10 to DN3600
  • Size Range: 1/2” to 24”
  • Rating: Class 150 to 2500 Flanges | PN 6, PN 10, PN 16, PN 25, PN 40, PN 64 upto PN 160
  • Type of Flanges: 304/304L Weld-Neck Flanges, 304/304L Socket-Weld Flange, 304/304L Lap-Joint Flange, 304/304L Orifice Flange, 304/304L Tongue-Grove Flange, 304/304L Blind Flange, 304/304L Threaded Flange, 304/304L Slip-On Flange, 304/304L Spectacle Flange, 304/304L Plate Flanges
  • Form: SORF, BLRF, WNRF, SWRF, LJRF, LWNRF, RTJ, Flat Face, Ring Type, Raised Face
  • Origin: Indian Origin, European Origin, Japanese Origin
  • Testing and Documents: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Test Report, Non Destructive Test Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports
  • Packing: Packed in Wooden Boxes, Bubble wraps, Steel Strips Bundled, or as per Customers Requests

Stainless Steel 304/304L Flanges in Stock

Dimension Standard Size Range Rating
ASME / ANSI B16.5 Flanges 1/2” to 24” Class 150 to 2500 Lbs
ASME B16.47 / API 605 Flanges 26” to 60” -
ASME / ANSI B16.36 Flanges 1” to 24” Class 300 to 2500 Lbs
ASME B16.48 / API 590 Flanges 1/2” to 24” Class 150 to 2500 Lbs
MSS-SP-44 Flanges 12” to 60” Class 150 to 900 Lbs
BS 3293 Flanges 26” to 48” Class 150 to 600 Lbs
API 6A Flanges 2 1/16” to 30” 2000 Psi to 20000 Psi
DIN Flanges DN10 to DN3600 PN6 to PN 160

Forms of AISI 304/304L in Stock

In Stock Stainless Steel 304/304L Weld Neck Flanges

SS 304/304L Weld Neck Flange

Stainless Steel 304/304L Weld Neck Flange available from class 150 to 2500

In Stock Stainless Steel 304/304L Tongue Groove Flanges

SS 304/304L Tongue Groove Flange

Stainless Steel 304/304L Tongue Groove Flanges available from PN6 to PN 160 ratings

In Stock Stainless Steel 304/304L Threaded Flanges with ASME B16.5 and ANSI B16.5

SS 304/304L Threaded Flange

Stainless Steel 304/304L Threaded Flange available in ASME / ANSI B16.5 standards

In Stock Stainless Steel 304/304L Spectacle Flanges

SS 304/304L Spectacle Flange

Stainless Steel 304/304L Spectacle Flange

In Stock Stainless Steel 304/304L Socket Weld Flanges

SS 304/304L Socket Weld Flange

Stainless Steel 304/304L Socket Weld Flange

In Stock Stainless Steel 304/304L Slip On Flanges

SS 304/304L Slip On Flange

Stainless Steel 304/304L Slip On Flange ASTM A182

In Stock Stainless Steel 304/304L Orifice Flanges

SS 304/304L Orifice Flange

Stainless Steel 304/304L Orifice Flange available from PN6 to PN 160 ratings

In Stock Stainless Steel 304/304L Lap Joint Flanges with ASME B16.36

SS 304/304L Lap Joint Flange

Stainless Steel 304/304L Lap Joint Flange available in ASME B16.36 and ANSI B16.36 ASTM A182 Flanges

In Stock Stainless Steel 304/304L Blind Flanges

SS 304/304L Blind Flange

Stainless Steel 304/304L Blind Flange available from class 150 to 2500LB

  • Chemical Properties
  • Mechanical Properties
  • Physical Properties
  • C P Mn Ni S Si Cr
    MIN - - - 8.000 - - 18.000
    MAX 0.080 0.045 2.000 10.500 0.030 0.750 20.000
    C Mn Si P S Cr Ni
    MIN - - - - - 18.000 8.000
    MAX 0.030 2.000 0.750 0.045 0.030 20.000 12.000
  • Yield Strength
    0.2% Proof
    (MPa)
    Tensile strength
    (MPa)
    Elongation
    (% in 50mm)
    Hardness
    (HRB)
    MIN 205 515 40.00  
    MAX       92
    Yield Strength
    0.2% Proof
    (MPa)
    Tensile strength
    (MPa)
    Elongation
    (% in 50mm)
    Hardness
    (HRB)
    MIN 485 170 40.00 -
    MAX - - - 92
  • Density lb/in³ 0.285
    kg/dm³ 7.9
    Modulus of Elasticity psi 29 x 10-6
    GPa 200
    Thermal Conductivity Btu/ft hr°F 8.7
    W/m°C 15
    Heat Capacity Btu/lb°F 0.12
    J/kg°C 500
    Electrical Resistivity Ω-inch 27.6 x 10-6
    µΩm 0.73
    Poissons ratio   0.3
    Density lb/in³ 0.285
    kg/dm³ 7.9
    Modulus of Elasticity psi 29 x 10-6
    GPa 200
    Thermal Conductivity Btu/ft hr°F 8.7
    W/m°C 15
    Heat Capacity Btu/lb°F 0.12
    J/kg°C 500
    Electrical Resistivity Ω-inch 27.6 x 10-6
    µΩm 0.73
    Poissons ratio   0.3

Properties of Stainless Steel 304/304L alloy

Stainless Steel 304/304L Cold Forming

Type AISI 304/304L is readily formed and fabricated through a full range of cold working operations. It can be used in heading, drawing, bending, and upsetting. Any cold working operations will increase the strength and hardness of the material, and may leave it slightly magnetic.

Stainless Steel 304/304L Hot Forming

Type AISI 304/304L can be forged in the 1700-2200°F range. For maximum corrosion resistance, forgings should be annealed at 1900°F minimum and water quenched or rapidly cooled by other means after hot working operations.

Stainless Steel 304/304L Machining

Type AISI 304/304L is a tough austenitic stainless steel subject to work hardening during deformation and, unless modified for improved machining response, is resistant to chip breaking. The best machining results are achieved with slower speeds, heavier feeds, excellent lubrication, sharp tooling, and powerful, rigid equipment.

Stainless Steel 304/304L Welding

Type AISI 304/304L is readily welded by a full range of conventional welding procedures (except oxyacetylene). AWS E308L/ER308L filler metals should be used with Type AISI 304/304L steel, but the molybdenum-containing austenitic stainless steel filler metals may also be considered.

Stainless Steel 304/304L Heat Treatment

Annealing: Type AISI 304/304L should be heated to 1900ºF minimum and water quenched or rapidly cooled by other means.
Hardening: Type AISI 304/304L cannot be hardened by heat treatment. However, Type AISI 304/304L can be hardened by cold working.

Services We Offer

Documentation

Documentation is a very important part of the products we supply, and we work continuously to enhance the efficiency of the document-handling process without compromising quality of the product. Documents provided along with the shipment include Certificate of Origin, Material Test Certificate as per EN 10204 3.1 and 10204 3.2, NACE MR10103 and NACE MR0175 certified Test Certificates.

Quality Assurance

Stainless Steel Flanges and Fittings are manufactured and controlled to international standards such as ASTM, ASME, BS, MSS, EN, DIN or WERKSTOFFE. Our products undergo stringent quality tests before they are dispatched.

Material Testing

PMI Testing, Ultrasonic Test, Mechanical Testing, Spectro Tests for Chemical Analysis of the grade, Flaring Test, IGC, etc. are some of the tests conducted at our facility. We welcome stage wise inspection from any of your representative or third party inspection agencies.

Packing and Delivery

The product is wrapped and packed in wooden crates or carton boxes. Our primary goal is to deliver quality products in time, no matter where the client is located.

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