PROVIDING DUPLEX AND SUPER DUPLEX STEEL PRODUCTS SINCE 1975

Because our business is always improving its manufacturing plants and our goods are manufactured utilizing cutting-edge technology, Duplex Steel & Alloys makes and delivers the highest quality Stainless Steel 321/321H Flanges. Because our skilled employees are always monitoring the changing market condition, all of our products are manufactured in accordance with international quality standards.

Stainless Steel 321 Flanges are from the austenitic stainless steel group of alloys that comprises chromium(18%), nickel(8%), iron, and titanium with other elements in small percentages. Stainless steel has 321 has great tensile strength and scaling resistance along with phase stability and corrosion resistance in an aqueous environment. These fasteners are utilized in a variety of applications, some of the industries and applications are aerospace, pulp and paper, offshore engineering, furnace components, and heat exchangers.

SS 321 Flange, 321 Stainless Steel Flange, Stainless Steel 321H Flange, Stainless Steel 321H Flanges, SS 321H Flange Price List, Stainless Steel 321 Flange Suppliers in Mumbai, India.

SS 321 Spectacle Blind Flange, SS 321H Slip On Flange, 321 SS Flange, Flange SS 321, SS 321H Blind Flange, ASTM A182 F321 Stainless Steel Flanges, SS 321 Flange Dimensions, 321H Stainless Steel Pipe Flange, SS 321 Flange HSN Code, Stainless Steel 321H Flange Manufacturers in India.

Stainless Steel 304 Flanges

The metal maintains its strength even when exposed to cryogenic temperatures. Titanium in the mix helps the alloy to be stabilized and gain better resistance to intergranular corrosion. It is also preferred over SS 304 due to its greater resistance to creep and rupture.

Stainless Steel 321H and 321 Flanges have some differences and similarities, which is due to the difference in the carbon content between the two. SS 321H has more carbon in the chemical mixup, which helps it to gain more strength and can be used in elevated temperature ranges. Though SS 321H's toughness can't be increased by heat treatment techniques, it can be welded and formed easily.

When type 321 cannot withstand high temperatures, generally exceeding 1000° F, grade 321H is utilized. Some of the major applications of Stainless Steel 321H flanges are in chemical processing equipment, aircraft exhaust stacks, food processing, and weld equipment. The creep resistance of SS 321H is greater than SS 321 and has acid corrosion resistance in many environments, except those involving chlorine or sulfuric acid.


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

Types of Stainless Steel 321 Flanges

SORF Flange

321 SS Slip On Flange

Plate Flanges

SS 321 Plate Flanges

Weld Neck Flange

321 SS Welding Neck Flange

Blind Flange

321 SS Blind Flange

Spectacle Blind Flange

321 SS Spectacle Blind Flange

Socket Weld Flange

321H Stainless Steel Socket Weld Flange

Threaded Flange

ASTM A182 321H SS Threaded Flange

Lap Joint Flange

321H Stainless Steel Lap Joint Flange

Ring Type Joint Flange

UNS S32100 Stainless Steel RTJ Flange

Long Weld Neck Flange

321 SS Long Weld Neck Flange

Tongue and Groove Flange

SS 321 Tongue and Groove Flange

Orifice Flange

321H Stainless Steel Orifice Flange

321H Stainless Steel Flange Equivalent Material

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

SS 321 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 321 Flange Supplier, 321 Stainless Steel SORF Flange, Stainless Steel 321H Flange, SS 321H Flange, SS 321 Flange Supplier, 321H Stainless Steel Flange, ASME B16.5 Stainless Steel 321 Flanges, SS 321 Flanges Suppliers in Mumbai.

If you are looking for best prices for 321 Stainless Steel Flanges, 321 Stainless Steel Flange, 321 Grade Stainless Steel Flange email us on info@duplexsteelalloys.com or call us on +91 9664408767

SS 321 Flange Price List

Product Price
321H Stainless Steel Flange Price List US $8.72-21.57 / Piece
321 Stainless Steel Slip on Flange Price US $13.58-30.23 / Piece
Stainless Steel 321 Weld Neck Flange Price List US $8.72-13.58 / Piece
321 Stainless Steel Square Flanges Price List S $13.56-28.23 / Piece
321H Stainless Steel Orifice Flange Price US $6.82-21.57 / Piece
SS 321 2 Inch SS Flange Price US $15.58-28.45 / Piece
SS 321H Lapped Flange Price US $15.86-31.33 / Piece
321 SS Threaded Flange Prices US $5.52-19.47 / Piece
321H Stainless Steel Blind Flange Price US $1.2-2.9 / Kilogram
SS 321 Spectacle Blind Flange Price US $2,100.00-3,500.00 / Ton

321 Stainless Steel Flanges Pressure and Temperature Ratings

Temperature °F Class 150 Class 600 Class 1500 Class 400 Class 900 Class 300 Class 2500
-20 to 100 275 1440 3600 960 2160 720 6000
300 205 1080 2700 720 1620 540 4500
200 230 1200 3000 800 1800 600 5000
400 190 995 2485 660 1490 495 4140
600 140 875 2185 580 1310 435 3640
650 125 860 2150 575 1290 430 3580
500 170 930 2330 620 1395 465 3880
700 110 850 2125 565 1275 425 3540
750 95 830 2075 555 1245 415 3460
850 65 790 1980 530 1190 395 3300
800 80 805 2015 540 1210 405 3360
900 50 780 1945 520 1165 390 3240
950 35 765 1910 510 1145 380 3180
1000 20 640 1605 430 965 320 2675
1100 20 515 1285 345 770 255 2145
1150 20 400 995 265 595 200 1655
1050 20 615 1545 410 925 310 2570
1200 20 310 770 205 465 155 1285
1250 20 225 565 150 340 115 945
1300 20 170 430 115 255 85 715
1400 20 95 240 65 145 50 400
1350 20 125 310 80 185 60 515
1450 15 70 170 45 105 35 285
1500 10 55 135 35 80 25 230

SS 321 Flange Weight Chart

NPS (Nominal Pipe Size) Loose (Lap Joint) NPT (Threaded) SORF (Slip On) BLRF (Blind) SWRF (Socket Weld) WRNR (Weld Neck)
½ 1 1 1 2 2 2
1 2 2 2 2 2 3
3 3 3 3 3 3
¾ 2 2 2 2 2 2
3 3 3 4 3 4
8 8 8 7 8 10
2 5 5 5 5 5 6
3 9 9 9 9 9 11.5
4 13 13 13 17 13 16.5
11 12 11 13 11 12
5 15 15 15 20 15 21
8 30 30 30 47 30 42
6 19 19 19 27 19 26
10 43 43 43 70 43 54
24 275 220 220 430 220 268
14 105 90 90 140 90 114
12 64 64 64 123 64 88
16 140 98 106 180 98 140
20 195 165 165 285 165 197
18 160 130 130 220 130 165
22 245 185 185 355 185 225

SS 321 Flange Dimensions

Normal Pipe Size (NPS) Of Flanges (I.D.) Inside Diameter Thickness Of Raised Face (RF)
(T)
Outside Daimeter (O.D.) Raised Face
(R)
RF
(Raised Face)
Holes Of Bolts
(B)
H T1 Thickness Of Flat Face (FF)
(T2)
BC (Circle Of Bolt) Bolts Holes
Numbers
1/2 0.88 0.88 3.75 1.38 .063 0.62 1.50 0.50 0.82 2.62 4
1 1.36 1.06 4.88 2.00 .063 0.75 2.12 0.63 1.00 3.50 4
3/4 1.09 1.00 4.62 1.69 .063 0.75 1.88 .056 0.94 3.25 4
1-1/4 1.70 1.06 5.25 2.50 .063 0.75 2.50 0.69 1.00 3.88 4
2 2.44 1.31 6.50 3.62 .063 0.75 3.31 0.82 1.25 5.00 8
1-1/2 1.95 1.19 6.12 2.88 .063 0.88 2.75 0.75 1.13 4.50 4
2-1/2 2.94 1.50 7.50 4.12 .063 0.88 3.94 0.94 1.44 5.88 8
3 3.57 1.69 8.25 5.00 .063 0.88 4.62 1.06 1.63 6.62 8
3-1/2 4.07 1.75 9.00 5.50 .063 0.88 5.25 1.13 1.69 7.25 8
4 4.57 1.88 10.00 6.19 .063 0.88 5.75 1.19 1.82 7.88 8
5 5.66 2.00 11.00 7.31 .063 0.88 7.00 1.32 1.94 9.25 8
18 18.18 3.50 28.00 21.00 .063 1.38 21.00 2.32 3.44 24.75 24
6 6.72 2.06 12.50 8.50 .063 0.88 8.12 1.38 2.00 10.62 12
8 8.72 2.44 15.00 10.62 .063 1.00 10.25 1.56 2.38 13.00 12
10 10.88 2.62 17.50 12.75 .063 1.12 12.62 1.82 2.56 15.25 16
12 12.88 2.88 20.50 15.00 .063 1.25 14.75 1.94 2.82 17.75 16
14 14.14 3.00 23.00 16.25 .063 1.25 16.75 2.06 2.94 20.25 20
20 20.20 3.75 30.50 23.00 .063 1.38 23.12 2.44 3.69 27.00 24
16 16.16 3.25 25.50 18.50 .063 1.38 19.00 2.19 3.19 22.50 20
22 22.22 4.00 33.00 25.25 .063 1.63 25.25 2.57 3.94 29.25 24
24 24.25 4.19 36.00 27.25 .063 1.62 27.62 2.69 4.13 32.00 24

Dimensions Tolerances Of Stainless Steel 321 Plate Flange

Flange Tolerance Table
D Inside Diameter (I.D.)
  • 10" and smaller: ±1/32" (0.8 mm)
  • 12" thru 18": +1/8" (3.2 mm)
  • 20" and larger: -1/16" (1.6 mm)
K Length of hub
  • 10" and smaller: ±1/16" (1.6 mm)
  • 12" and larger: ±1/8" (3.2 mm)
B Diameter of contact face
  • 1/16" raised face: ±1/32" (0.8 mm)
  • 1/4" RF (Raised Face), T/G (Tongue & Groove), (male & female), (m/f): ±1/64" (0.4 millimeter)
A O.D. (Outside Diameter)
  • When O.D. (Outside Diameter) is 24" or less: ±1/16" (1.6 millimeter)
  • When O.D. (Outside Diameter) is over 24": ±1/8" (3.2 millimeter)
J Diameter of hub at base
  • When hub base is 24" or smaller: ±1/16" (1.6 millimeter)
  • When hub base is over 24": ±1/8" (3.2 millimeter)
P Drilling
  • Circle Bolts: ±1/16" (1.6 mm)
  • Bolts hole spacing: ±1/32" (0.8 mm)
Eccentricity of bolt circle with respect to facing
  • 2 1/2" and smaller ±1/32" (0.8 mm) maximum
  • 3" and larger ±1/16" (1.6 mm) maximum
H Diameter of hub at point of welding
  • 5" and smaller: +3/32" (2.4 mm), -1/32" (0.8 mm)
  • 6" and larger: +5/32" (4.0 mm), -1/32 (0.8 mm)
C Thickness
  • 18" and smaller: ±1/8" (3.2 mm), -0"
  • 20" and larger: ±3/16" (4.8 mm), -0"

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Widest Range of Stainless Steel 321 Flange in Mumbai, India.

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Inspection & Testing of 321 Stainless Steel Pipe Flange

Before being prepared for shipment to the customer, ASTM A182 304 Stainless Steel Flanges Testing should be constructed in accordance with applicable standards and thoroughly tested for potential flaws.

Direct-reading Spectrograph

Direct-Reading Spectrograph

UI trasonic flaw detector

UI Trasonic Flaw Detector

Hydrostatic testing machine

Hydrostatic Testing Machine

X-ray detector

X-ray Detector

Magnetic particle detector

Magnetic Particle Detector

Flattening Test

Flattening Test

PMI Testing

PMI Testing

Hardness Test

Hardness Test

Pitting Resistance Test

Pitting Resistance Test

Hydrostatic test pressure of Stainless Steel 321H Flanges

ASTM
Specification
Class
150 300 400 600 900 1500 2500
A182-F321
A182-F321H
A182-F321H
425 1100 1450 2175 3250 5400 9000

Stainless Steel 321H Flange - Comparing International Standards

USA France Germany Germany Italy Japan Russia Spain Sweden UK European Union
AISI AFNOR DIN 17006 W.N. 17007 UNI JIS GOST UNE SIS BSI EURONORM
321 Z 6 CNT 18-10 X 6 CrNiTi 18 10 X 12 CrNiTi 18 9 1.4541 1.4878 X 6 CrNiTi 1811 SUS 321 12KH18N10T X 6 CrNiTi 18-11 23 37 321S31 X 6 CrNiTi 18 10
321H X 8 CrNiTi 1811 SUS 321H X 7 CrNiTi 18-11 321S20
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321 Stainless Steel Flanges Supply in Below Countries

Products We Supplied Description Country
ASME SA182 SS 321H Long Weld Neck Flange Weight 1.4878 2500 LBS LWN Flange Dimensions Portugal, New Zealand, Belgium, Taiwan
SS GOST 08Х18Н10 Plate Flanges 321 SS Loose Flanges Czech Republic, Chile, Jordan, Nigeria, Ecuador
321H Stainless Steel Forged Flanges UNS S32109 Forged Flanges Bulgaria, Nepal, Bhutan, Kuwait
ASTM A182 F321 Slip On Flange Welding 600 LBS SA182 Gr F321 SORF Flanges Belarus, Azerbaijan, South Africa, Gambia, Oman
Stainless Steel 321 Raised Face Weld Neck Flange 1.4541 Welding Neck Flange Yemen, Slovakia, Puerto Rico, Romania, Mongolia
321H SS Socket Weld Flange ANSI B16.47 SS 1.4878 Socket Weld Flange Dimensions Hong Kong, Switzerland, Singapore, Australia
321H Stainless Steel End Blind Flange BS 10 Table F SS 321 Blind Flange Connection Estonia, Denmark, Vietnam, Hungary
Stainless Steel 321H Raised Face Slip On Flange UNS S32100 Flat Face Slip On Flange Serbia, Malaysia, Germany, Venezuela

Common Application for 321H Stainless Steel Flanges

Heavy Equipment

Heavy Equipment

Automotive

Automotive

Power Generation

Power Generation

Construction

Construction

Chemical Processing

Chemical

Oil & Gas

Oil & Gas

Shipbuilding

Shipbuilding

Aerospace

Aerospace