In industrial applications, stainless steel flanges are an essential component. They come in various types, each with its specific characteristics and benefits. Among the most popular stainless steel flanges are 321 and 321H flanges. These flanges are widely used in various industries due to their exceptional strength, corrosion resistance, and heat resistance properties.

Stainless Steel 321 Flanges are classified into six types - Weld Neck Flange, Slip-On Flange, Blind Flange, Socket Weld Flange, Lap-Joint Flange, and Threaded Flange. These flanges offer excellent corrosion resistance and strength, making them suitable for applications in extreme temperature and pressure environments.

Stainless Steel 321 Flanges, SS 321 Blind Flange, Stainless Steel 321 Forged Flange, SS 321H Weld Neck Flanges, SS 321H Lap Joint Flanges, Stainless Steel 321 Reducing Flanges, Stainless Steel 321 Slip on Flanges, SS 321H Square Flanges Manufacturers in India.

Stainless Steel 321H Flanges are primarily used in high-temperature applications. Its higher carbon content offers better resistance to thermal shock and intergranular corrosion resistance. It’s typically used in exhaust manifolds, thermal oxidizers, furnaces, heat exchangers, and combustion systems. The 321H grade is also used in the aerospace and chemical industries for critical applications where thermal loading is a concern.

321H SS Reducing Flanges, SS 321H Ring Type Joint Flanges, SS 321 Socket weld Flanges Exporter, Stainless Steel 321 WNRF Flange, SS 321H Threaded Flanges, SS 321H Reducing Flanges, SS 321 Lap Joint Flanges, SS 321 Ring Type Joint Flanges Manufacturers in India.

The 321 and 321H grades of stainless steel flanges are widely used across several industrial applications. Other application areas include pulp and paper mills, power generation plants, and marine engineering.

The 321 and 321H Grades of Stainless Steel Flanges are known for their superior corrosion resistance, high tensile strength, and excellent creep strength. They offer excellent resistance to intergranular corrosion and are suitable for high-temperature environments. Furthermore, stainless steel 321H flanges have a lower risk of sensitization due to their higher carbon content.

Stainless Steel 321 and 321H flanges are highly versatile, offer superior corrosion resistance, and are suitable for several industrial applications. In the food processing, chemical processing, oil and gas, or pharmaceutical industry, the 321 and 321H grades of stainless steel flanges offer so much in terms of long-term performance, durability, and cost-effectiveness.

Stainless Steel 321 Flanges
Stainless Steel 321H Weld Neck Flages
Stainless Steel 321H Plate Flange

SS 321 Flanges Specification

Standard ASTM A182 / ASME SA182
Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Flange Size Chart 1/2" (15 NB) to 48" (1200NB), DN10~DN5000
Pressure Rating Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
JIS 16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K
Flange Connection / Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove, Flange Pipe.
Origin West Europe / Japan / Indian / USA / Korean
Types of Flanges Threaded / Screwed / Forged / Plate
Coating Yellow Transparent, Zinc Plated, Anti-rust Paint, Oil Black Paint, Cold and Hot Dip Galvanized
Test Of Flange Direct-reading Spectrograph, Ultrasonic flaw detector, Magnetic particle detector, X-ray detector, Hydrostatic testing machine.
Production technique Used Heat treated, Forged and Machined
Equipment Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc.
Test Certificates EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc

SS 321 Flange Price List

Price List of Stainless Steel 321 Flanges SS 321 Flange Price in India (INR) SS 321H Flanges Price in USD SS 321H Flanges Price in UAE (Dirham)
Price of Stainless Steel 321 Flanges ₹ 1870 $ 25.58 USD 74.57 AED
Stainless Steel 321 Threaded Flanges Price ₹ 1380 $ 14.72 USD 56.70 AED
Stainless Steel 321 Flange Price List India ₹ 2540 $ 36.00 USD 112.90 AED
321 Stainless Steel Flanges Price List ₹ 1950 $ 26.70 USD 86.40 AED
SS 321 Flange Price ₹ 1650 $ 17.50 USD 66.00 AED
321H Stainless Steel Raised Face Blind Flange ₹ 1670 $ 15.53 USD 44.17 AED
321H Stainless Steel Flanges Price ₹ 870 $ 17.35 USD 34.70 AED
SS 321H Flange Price Per Kg ₹ 880 $ 14.69 USD 52.62 AED

Stainless Steel 321 Flanges Technical Data Sheet

Stainless Steel 321H Pipe Flanges Equivalent Grade

SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

321H Stainless Steel Flanges Manufacturing Process

manufacturing process

Common Types Of Stainless Steel 321 Flanges

Weld Neck Flange

SS 321 Weld Neck Flanges

Blind Flanges

Stainless Steel 321H Blind Flanges

Socket weld Flanges

SS 321H Socket Weld Flanges

Slip on Flanges

SS 321 Slip-on Flanges

RTJ Flange

Stainless Steel 321H RTJ Flange

Forged Flanges

SS 321 Forged Flanges

Lap Joint Flanges

321H SS Lap Joint Flanges

Threaded Flange

Stainless Steel 321H Threaded Flanges

Spectacle Blind Flange

321 SS Spectacle Blind Flange

Other Type 321 Stainless Steel Flanges

  • Stainless Steel 1.4541 Raised Face Flanges
  • Stainless Steel 321 Socket Weld Flanges
  • SS 321 Flat Flange
  • Stainless Steel 321H Square Flanges
  • SS 321 Flanges Manufacturers in India
  • Stainless Steel 321 Flat Face Flange
  • SS 321H Forged Flanges
  • UNS S32109 Long Weld Neck Flanges
  • ASTM A182 321H SS Plate Flange
  • SS 321H Socket weld Flanges
  • 321H SS Threaded Flanges
  • SS 321 Flange Dimensions
  • Steel 321H Square Flanges
  • 321H Stainless Steel Reducing Flanges
  • SS 321 Flanges Manufacturer in Mumbai
  • Stainless Steel 321H Lap Joint Flanges
  • UNS S32100 Flanges
  • Stainless Steel 321 Flanges Suppliers in India
  • Stainless Steel 321H Weld Neck Flanges
  • SS 321H Ring Type Joint Flanges
  • ASME SA182 F321 Stainless Steel Pipe Flange
  • A182 F321H Blind Flanges
  • Stainless Steel 321 BS 4504 Flanges
  • 321H SS Lapped Joint Flanges
  • ANSI B16.5 321 SS Pipe Flanges
  • SS 321 Flange Suppliers in India
  • UNS S32100 Plate Flanges
  • 321 Stainless Steel Industrial Flanges
  • Stainless Steel 321H Orifice Flanges
  • Stainless Steel 321H Flanges Suppliers in Mumbai
  • SS 321H Flanges Suppliers in Mumbai
  • Stainless Steel 321H Reducing Flanges
  • 321H SS Orifice Flanges
  • 1.4878 Pipe Flanges
  • Stainless Steel 1.4541 Plate Flanges
  • SS 321H Slip on Flanges
  • Stainless Steel 321 Flanges Manufacturers in India
  • 321H SS Pipe Flanges

321H SS Flanges Chemical Composition

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

SS 321 Flange Mechanical Properties

Density Melting Point Tensilee Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Stainless Steel 321H Flanges Industrial Application