Stainless Steel 321/321H Flanges

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Stainless Steel 321/321H Flanges Manufacturer and Supplier

Leading Stainless Steel 321 Flanges Manufacturer, 321H Stainless Steel Flanges Supplier, Stainless Steel 321 Pipe Flanges Stockist, ASTM A182 SS F321 Weld Neck Flanges Exporter, Stainless Steel 321H Blind Flanges, Stainless Steel 321 Slip On Flanges, Stainless Steel 321 Socket Weld Flanges Trader, SS 321H Lap Joint Flanges, ASME SA182 F321 Orifice Flanges Supplier, SUS 321H Plate Flanges, Stainless Steel 321 Forged Flanges Supplier in Mumbai, India.

Shriram Metal is a reliable supplier and manufacturer of Stainless Steel 321/321H Flanges, which provide exceptional heat and corrosion resistance for demanding industrial applications. These titanium-stabilized flanges are very resistant to intergranular corrosion and work particularly well in high-temperature situations. Whether utilized in petrochemical facilities, aerospace industries, or heat exchangers, our SS 321 and 321H flanges provide long-term durability and high tensile strength. We create a number of flange types, including weld neck, slip-on, threaded, blind, and lap joint, to fulfill worldwide quality requirements for consistent performance.

Shriram Metal is dedicated to supplying precision-engineered Stainless Steel 321/321H Flanges that satisfy industry standards through rigorous quality control and testing. Our flanges are available in bespoke sizes and specifications to ensure a precise fit for your project. We streamline your procurement process with competitive price, on-time delivery, and great customer service. Contact us at sales@shrirammetal.com if you have any questions or would like to place a large purchase!

Stainless Steel 321 Industrial Flanges Supplier, Stainless Steel 321H Reducing Flanges Trader, ANSI B16.5 Stainless Steel 321 WNRF Flanges, SS 321 SORF Flanges Wholesaler, 321H Stainless Steel RTJ Flanges Exporter, 321 SS Groove & Tongue Flanges, UNS S32100 Plate Flanges Supplier, ASTM A182 SS 321H Threaded Flanges Distributor in India, UNS S32109 Spectacle Blind Flanges Dealer.

321/321H Stainless Steel Flanges Specifications

Specifications ASTM A182, ASME SA182
Dimensions ANSI B16.36, ANSI B16.48, ANSI/ASME B16.5, ANSI B16.47, Series A & B, DIN, BS4504, BS10, MSS SP44, EN-1092,
Grade Stainless Steel 321/321H
Sizes 1/2" - 48" (15NB - 1200NB), DN10 - DN5000 | Custom Sizes
Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Standards ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

SS 321/321H Flanges Equivalent Grades

STANDARD WERKSTOFF NR. UNS JIS EN
SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

Stainless Steel 321/321H 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 321/321H Flanges Mechanical Properties

Grade Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
SS 321/321H 8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Stainless Steel 321/321H Flanges Types & Availability

Stainless Steel 321/321H Weld Neck Flanges

  • Stainless Steel 321 Weld Neck Flanges
  • Stainless Steel 321H Weld Neck Flanges

Stainless Steel 321/321H Slip-On Flanges

  • Stainless Steel 321 Slip-On Flanges
  • Stainless Steel 321H Slip-On Flanges

Stainless Steel 321/321H Blind Flanges

  • Stainless Steel 321 Blind Flanges
  • Stainless Steel 321H Blind Flanges

Stainless Steel 321/321H Socket Weld Flanges

  • Stainless Steel 321 Socket Weld Flanges
  • Stainless Steel 321H Socket Weld Flanges

Stainless Steel 321/321H Lap Joint Flanges

  • Stainless Steel 321 Lap Joint Flanges
  • Stainless Steel 321H Lap Joint Flanges

Stainless Steel 321/321H RTJ Flanges

  • Stainless Steel 321 RTJ Flanges
  • Stainless Steel 321H RTJ Flanges

Stainless Steel 321/321H Long Weld Neck Flanges

  • Stainless Steel 321 Long Weld Neck Flanges
  • Stainless Steel 321H Long Weld Neck Flanges

Stainless Steel 321/321H Spectacle Blind Flanges

  • Stainless Steel 321 Spectacle Blind Flanges
  • Stainless Steel 321H Spectacle Blind Flanges

Stainless Steel 321/321H Threaded Flanges

  • Stainless Steel 321 Threaded Flanges
  • Stainless Steel 321H Threaded Flanges

Stainless Steel 321/321H Flanges Updated Price List

Request the latest 321/321H Stainless Steel Flanges Price List. Please call us +91 8655717447 or mail us sales@shrirammetal.com to request the updated price list and ready stock information along with your requirement.

SS 321/321H Flanges Manufacturing Standard

ASME/ANSI B 16.5 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 B 16.47 Blind Flange [Series A & B], Welding Neck Flange
PRESSURE CLASS 75, 150, 300, 400, 600, 900
ASME/ANSI B 16.36 Orifice Flange, Slip-On Flange, Threaded Flange, Welding Neck 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 Flange, Hubbed Threaded Flange
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 Flange, Hubbed Threaded Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
BS 10 Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange
TABLE D, E, F, H
DIN FLANGES DIN 2501, 2527, 2566, 2572, 2573, 2575, 2576, 2627, 2628, 2629, 2630, 2631, 2632, 2633, 2634, 2635, 2636, 2637, 2638, 2641, 2642, 2643, 2655, 2656, 2673
PRESSURE CLASS PN 6 TO PN 100

SS 321/321H Flanges Dimensions & Specifications

Nominal Size Outside Diameter (OD) Min. Thickness (T) RF Dia. (R) No. of Bolt Holes Diameter of Holes Bolt Circle (BC) SO Bore ID (SB) WN Bore ID (WB) Dia. Hub Base (HB) Dia. of Hub Top (HT) SO LTH (SL) WN LTH (WL)
12 3.50 0.38 1.38 4 0.62 2.38 0.88 0.62 1.19 0.84 0.56 1.81
34 3.88 0.44 1.69 4 0.62 2.75 1.09 0.82 1.50 1.05 0.56 2.00
1 4.25 0.50 2.00 4 0.62 3.12 1.36 1.05 1.94 1.32 0.62 2.12
114 4.62 0.56 2.50 4 0.62 3.50 1.70 1.38 2.31 1.66 0.75 2.19
112 5.00 0.62 2.88 4 0.62 3.88 1.95 1.61 2.56 1.90 0.81 2.38
2 6.00 0.69 3.62 4 0.75 4.75 2.44 2.07 3.06 2.38 0.94 2.44
212 7.00 0.81 4.12 4 0.75 5.50 2.94 2.47 3.56 2.88 1.06 2.69
3 7.50 0.88 5.00 4 0.75 6.00 3.57 3.07 4.25 3.50 1.12 2.69
312 8.50 0.88 5.50 8 0.75 7.00 4.07 3.55 4.81 4.00 1.19 2.75
4 9.00 0.88 6.19 8 0.75 7.50 4.57 4.03 5.31 4.50 1.25 2.94
5 10.00 0.88 7.31 8 0.88 8.50 5.66 5.05 6.44 5.56 1.38 3.44
6 11.00 0.94 8.50 8 0.88 9.50 6.72 6.07 7.56 6.63 1.50 3.44
8 13.50 1.06 10.62 8 0.88 11.75 8.72 7.98 9.69 8.63 1.69 3.94
10 16.00 1.12 12.75 12 1.00 14.25 10.88 10.02 12.00 10.75 1.88 3.94
12 19.00 1.19 15.00 12 1.00 17.00 12.88 12.00 14.38 12.75 2.12 4.44
14 21.00 1.31 16.25 12 1.12 18.75 14.14 13.25 15.75 14.00 2.19 4.94
16 23.50 1.38 18.50 16 1.12 21.25 16.16 15.25 18.00 16.00 2.44 4.94
18 25.00 1.50 21.00 16 1.25 22.75 18.18 17.25 19.88 18.00 2.62 5.44
20 27.50 1.62 23.00 20 1.25 25.00 20.20 19.25 22.00 20.00 2.81 5.62
22 29.50 1.75 25.25 20 1.38 27.25 22.22 21.25 24.25 22.00 3.07 5.82
24 32.00 1.81 27.25 20 1.38 29.50 24.25 23.25 26.12 24.00 3.19 5.94

SS 321/321H Flanges Size Chart

Normal Sizes In inch Dimension Flanges Dimensional Sizes 1/2 inch. to 2 1/2 inch.
Class 125 Class 150 Class 300 Class 400 Class 600 Class 900 Class 1500 Class 2500
inch. mm inch. millimeter inch. mm inch. mm inch. mm inch. mm inch mm
1/2 A 3 1/2 88.9 3 3/4 95.2 3 3/4 95.2 3 3/4 95.2 4 3/4 121 4 3/4 121 5 1/4 133.4
b 7/16 11.1 9/16 14.3 9/16 14.3 9/16 14.3 7/8 22.2 7/8 22.2 1 3/16 30.2
D2 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9 1 3/8 34.9
D1 2 3/8 60.3 2 5/8 66.7 2 5/8 66.7 2 5/8 66.7 3 1/4 82.6 3 1/4 82.6 3 1/2 88.9
n 4 4 4 4 4 4 4 4 4 4 4 4 44
d 5/8 15.9 5/8 15.9 5/8 15.9 5/8 15.9 7/8 22.2 7/8 22.2 7/8 22.2
3/4 A 3 7/8 98.4 4 5/8 117.5 4 5/8 117.5 4 5/8 117.5 5 1/8 130 5 1/8 130 5 1/2 139.7
b 1/2 12.7 5/8 15.9 5/8 15.9 5/8 15.9 1 25.4 1 25.4 1 1/4 31.8
D2 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9 1 11/16 42.9
D1 2 3/4 69.8 3 1/4 82.5 3 1/4 82.5 3 1/4 82.5 3 1/2 88.9 3 1/2 88.9 3 3/4 95.2
n 4 4 4 4 4 4 4 4 4 4 4 4 44
d 5/8 15.9 3/4 19 3/4 19 3/4 19 7/8 22.2 7/8 22.2 7/8 22.2
1 A 4 1/4 108 4 7/8 123.8 4 7/8 123.8 4 7/8 123.8 5 7/8 149.2 5 7/8 149.2 6 1/4 159
b 9/16 14.3 11/16 17.5 11/16 17.5 11/16 17.5 1 1/8 28.6 1 1/8 28.6 1 3/8 34.9
D2 2 50.8 2 50.8 2 50.8 2 50.8 2 50.8 2 50.8 2 50.8
D1 3 1/8 79.4 3 1/2 88.9 3 1/2 88.9 3 1/2 88.9 4 102 4 102 4 1/4 108
n 4 4 4 4 4 4 4 4 4 4 4 4 4 4
d 5/8 15.9 3/4 19 3/4 19 3/4 19 1 25.4 1 25.4 1 25.4
1 1/4 A 4 5/8 117.5 5 1/4 133.4 5 1/4 133.4 5 1/4 133.4 6 1/4 159 6 1/4 159 7 1/4 184.2
b 5/8 15.9 3/4 19 13/16 20.6 13/16 20.6 1 1/8 28.6 1 1/8 28.6 1 1/2 38.1
D2 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5 2 1/2 63.5
D1 3 1/2 88.9 3 7/8 98.4 3 7/8 98.4 3 7/8 98.4 4 3/8 111 4 3/8 111 5 1/8 130
n 4 4 4 4 4 4 4 4 4 4 4 4 4 4
d 5/8 15.9 3/4 19 3/4 19 3/4 19 1 25.4 1 25.4 1 1/8 28.6
1 1/2 A 5 127 6 1/8 155.6 6 1/8 155.6 6 1/8 155.6 7 177.8 7 177.8 8 203
b 11/16 17.5 13/16 20.6 7/8 22.2 7/8 22.2 1 1/4 31.8 1 1/4 31.8 1 3/4 44.5
D2 2 7/8 73 98 2 7/8 73 2 7/8 73 2 7/8 73 2 7/8 73 2 7/8 73 2 7/8 73
D1 3 7/8 4 4 1/2 114 4 1/2 114 4 1/2 114 4 7/8 124 4 7/8 124 5 3/4 146
n 4 4 4 4 4 4 4 4 4 4 4 4 4 4
d 5/8 . 15.9 7/8 22.2 7/8 22.2 7/8 22.2 1 1/8 28.6 1 1/8 28.6 1 1/4 31.8
2 A 6 152.4 6 1/2 165.1 6 1/2 165.1 6 1/2 165.1 8 1/2 215.9 8 1/2 215.9 9 1/4 234.9
b 3/4 19 7/8 22.2 1 25.4 1 25.4 1 1/2 38.1 1 1/2 38.1 2 50.8
D2 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1 3 5/8 92.1
D1 4 3/4 121 5 127 5 127 5 127 6 1/2 165.1 6 1/2 165.1 6 3/4 171
n 4 4 8 8 8 8 8 8 8 8 8 8 8 8
d 3/4 19 3/4 19 3/4 19 3/4 19 1 25.4 1 25.4 1 1/8 28.6
2 1/2 A 7 177.8 7 1/2 190.5 7 1/2 190.5 7 1/2 190.5 9 5/8 244 9 5/8 244 10 1/2 266.7
b 7/8 22.2 1 25.4 1 1/8 28.6 1 1/8 28.6 1 5/8 41.3 1 5/8 41.3 2 1/4 57.2
D2 4 1/8 104.8 4 1/8 104.8 4 1/8 104.8 4 1/8 104.8 4 1/8 105 4 1/8 105 4 1/8 105
D1 5 1/2 139.7 5 7/8 149.2 5 7/8 149.2 5 7/8 149.2 7 1/2 190.5 7 1/2 190.5 7 3/4 197
n 4 4 8 8 8 8 8 8 8 8 8 8 8 8
d 3/4 19 7/8 22.2 7/8 22.2 7/8 22.2 1 1/8 28.6 1 1/8 28.6 1 1/4 31.8

ASA / ANSI / ASME B16.34 – ANSI SS 321/321H Flanges PRESSURE RATING CHART

°F Temperature 150 LBS 300 LBS 400 LBS 600 LBS 900 LBS 1500 LBS 2500 LBS
-20 to 1002757209601440216036006000
2002306008001200180030005000
3002055407201080162027004500
400190495660995149024854140
500170465620930139523303880
600140435580875131021853640
650125430575860129021503580
700110425565850127521253540
75095415555830124520753460
80080405540805121020153360
85065395530790119019803300
90050390520780116519453240
95035380510765114519103180
10002032043064096516052675
10502031041061592515452570
11002025534551577012852145
1150202002654005959951655
1200201552053104657701285
125020115150225340565945
13002085115170255430715
1350206080125185310515
140020506595145240400
145015354570105170285
15001025355580135230

Stainless Steel 321/321H Flanges Pressure Ratings

Temp. ℃Pressure-ASME temperature rating for B16.47  by class, bar     
 75150300400600900
-29 to 3810.020.051.768.9103.4155.1
509.819.551.768.9103.4155.1
1008.817.750.767.5101.3152.0
1507.915.845.961.291.9137.8
2006.913.842.756.985.3128.0
2506.012.140.553.980.9121.4
3005.110.238.951.877.7116.6

SS 321/321H Flanges Forms & Availability

  • ASTM A182 SS 321 Weld Neck Flanges
  • Stainless Steel 321 WNRTJ Flanges
  • Stainless Steel 321 WNRF Flanges
  • ANSI B16.5 SS 321 WNFF Pipe Flanges
  • UNS S32100 RFWN Pipe Flanges Supplier
  • ASTM A182 SS 321 Slip on Flanges
  • Stainless Steel 321 SORF Flanges
  • Stainless Steel 321 SORTJ Flanges
  • SS 321 Slip on Raised Face Flanges
  • ANSI B16.5 SS 321 RFSO Pipe Flanges
  • SS 321 Class 150 SORF Flanges
  • ASTM A182 SS 321 Blind Flanges
  • Stainless Steel 321 BLRTJ Flanges
  • Stainless Steel 321 BLFF Flanges
  • SS 321 Blind Raised Face Flanges
  • ANSI B16.5 SS 321 RFBL Pipe Flanges
  • SS 321 Class 150 BLRF Flanges
  • ASTM A182 SS 321 Socket Weld Flanges
  • Stainless Steel 321 SWRF Flanges
  • Stainless Steel 321 SWRTJ Flanges
  • SS 321 Socket Weld Raised Face Flanges
  • ANSI B16.5 SS 321 SWFF Pipe Flanges
  • SS 321 Class 150 RFSW Flanges
  • ASTM A182 SS 321 Threaded Flanges
  • SS 321 Class 150 Screwed Flanges
  • ASTM A182 SS 321 Lap Joint Flanges
  • Stainless Steel 321 LJRF Flanges
  • Stainless Steel 321 LJ Flanges
  • SS 321 Lapped Joint Raised Face Flanges
  • ASTM A182 SS 321 RTJ Flanges
  • SS 321 Ring Type Joint Raised Face Flanges
  • ASTM A182 SS 321 Long Weld Neck Flanges
  • Stainless Steel 321 LWN Flanges
  • SS 321 Raised Face Long Weld Neck Flanges
  • SS 321 Class 150 Spectacle Blind Flanges
  • ANSI B16.5 SS 321 Plate Flanges
  • SS 321 Class 300 Orifice Pipe Flanges
  • SS 321 Raised face Orifice Flanges
  • ANSI B16.5 SS 321 Groove Flanges
  • SS 321 Class 150 Orifice Tongue Flanges
  • ASTM A182 SS 321H Weld Neck Flanges
  • Stainless Steel 321H WNRTJ Flanges
  • Stainless Steel 321H WNRF Flanges
  • ANSI B16.5 SS 321H WNFF Pipe Flanges
  • UNS S32109 RFWN Pipe Flanges Supplier
  • ASTM A182 SS 321H Slip on Flanges
  • Stainless Steel 321H SORF Flanges
  • Stainless Steel 321H SORTJ Flanges
  • SS 321H Slip on Raised Face Flanges
  • ANSI B16.5 SS 321H RFSO Pipe Flanges
  • SS 321H Class 150 SORF Flanges
  • ASTM A182 SS 321H Blind Flanges
  • Stainless Steel 321H BLRTJ Flanges
  • Stainless Steel 321H BLFF Flanges
  • SS 321H Blind Raised Face Flanges
  • ANSI B16.5 SS 321H RFBL Pipe Flanges
  • SS 321H Class 150 BLRF Flanges
  • ASTM A182 SS 321H Socket Weld Flanges
  • Stainless Steel 321H SWRF Flanges
  • Stainless Steel 321H SWRTJ Flanges
  • SS 321H Socket Weld Raised Face Flanges
  • ANSI B16.5 SS 321H SWFF Pipe Flanges
  • SS 321H Class 150 RFSW Flanges
  • ASTM A182 SS 321H Threaded Flanges
  • SS 321H Class 150 Screwed Flanges
  • ASTM A182 SS 321H Lap Joint Flanges
  • Stainless Steel 321H LJRF Flanges
  • Stainless Steel 321H LJ Flanges
  • SS 321H Lapped Joint Raised Face Flanges
  • ASTM A182 SS 321H RTJ Flanges
  • SS 321H Ring Type Joint Raised Face Flanges
  • ASTM A182 SS 321H Long Weld Neck Flanges
  • Stainless Steel 321H LWN Flanges
  • SS 321H Raised Face Long Weld Neck Flanges
  • SS 321H Class 150 Spectacle Blind Flanges
  • ANSI B16.5 SS 321H Plate Flanges
  • SS 321H Class 300 Orifice Pipe Flanges
  • SS 321H Raised face Orifice Flanges
  • ANSI B16.5 SS 321H Groove Flanges
  • SS 321H Class 150 Orifice Tongue Flanges

Industries we Serve

We Export this Stainless Steel 321/321H Flanges to countries such as Afghanistan, Albania, Andorra, Austria, Bahrain, Bangladesh, Bhutan, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus, Croatia, Czech Republic, Denmark, Estonia, Egypt, Finland, France, Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia, Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Netherlands, Norway, Oman, Poland, Portugal, Pakistan, Palestine, Philippines, Qatar, Russia, Romania, Russia, San Marino, Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland, Saudi Arabia, Singapore, South Korea, South Africa, Sri Lanka, Syria, Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen

We Supply Stainless Steel 321/321H Flanges to cities including Mumbai, Delhi, Kolkata, Chennai, Bengaluru, Hyderabad, Ahmadabad, Pune, Surat, Jaipur, Kanpur, Lucknow, Nagpur, Ghaziabad, Indore, Coimbatore, Kochi, Patna, Kozhikode, Bhopal, Thrissur, Vadodara, Agra, Malappuram, Thiruvananthapuram, Kannur, Ludhiana, Nashik, Vijayawada, Madurai, Varanasi, Meerut, Faridabad, Rajkot, Jamshedpur, Srinagar, Jabalpur, Asansol, Vasai Virar City, Allahabad, Dhanbad, Aurangabad, Amritsar, Jodhpur, Ranchi, Raipur, Kollam, Gwalior, Durg-Bhilainagar, Chandigarh, Tiruchirappalli, Kota