Stainless Steel 304 / 304L Flanges

What are Stainless Steel 304 Flanges?
Stainless Steel 304 Flanges are the most common and versatile stainless steel forms. They have a high level of oxidation and corrosion resistance.
Stainless Steel 304 Flanges are available in different sizes, shapes, and specifications. Stainless Steel 304 and 304L flanges have a very low carbon content and can be used as welded. They have excellent weldability and are also resistant to oxidation.
Stainless Steel 304 and 304L flanges are commonly used in piping systems. They are made of austenitic stainless steel and offer high corrosion resistance and excellent forming and welding properties. This material is used in many applications, including heat exchangers, petrochemicals, speciality chemicals, and railways.

UNS S30403 SS Slip On Flanges, Stainless Steel 304L SS Flanges, 304 SS Orifice Flanges Manufacturer, 304L SS Socket Weld Flanges Dealer in India.

Stainless Steel Flanges, Stainless Steel 304 Blind Flanges, SS UNS S30400 Flanges Stockist, SS Ring Type Joint Flanges, SS Reducing Flanges Suppliers.

SS 304 Flanges (UNS S30403) is a variant of SS 304 and has a low content of carbon that recovers weldability and drops the hazard of condensed resistance to corrosion around the weld. Stainless Steel 304L Flanges are the usual “18/8 alloy” usually discovered in cooking and pan tools.

Stainless Steel 304 / 304L Flanges
Stainless Steel 304 / 304L Forged Flanges
Stainless Steel 304 / 304L Slip On Flanges
Stainless Steel 304 / 304L Plate Flanges
Stainless Steel 304 / 304L Flanges
Stainless Steel 304 / 304L Loose Flanges
Stainless Steel 304 / 304L Long Weld Neck Flanges
Stainless Steel 304 / 304L Square Flanges
Stainless Steel 304 / 304L Spactical Blind Flanges
Stainless Steel 304 / 304L Reducing Flanges

Stainless Steel 304 / 304L Flanges

ASTM A182 / A240 SS 304 / 304L Flanges Distributor

SS 304 Pipe Flanges Specifications

SS 304 Plate Flanges Useful Info

SS 304 Flange Price List India

SS 304 Flanges Weight Chart

Stainless Steel 304 Pipe Flange Pressure Ratings

Size Chart of Stainless Steel Blind Flange

Stainless Steel 304L Weld Neck Flanges Physical Properties

Stainless Steel 304L Socket Weld Flange Schedule Chart

Werkstoff No. 1.4306 Large Diameter Flanges Tolerances

304L SS Flanges Main Markets

SS 304 / 304L Flanges Application

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What are Stainless Steel 304L Flanges?
Stainless Steel 304L Flanges are often used in low-pressure piping systems. These flanges connect pipe sections to a pressure vessel or pump. The flanges are secured to the piping system by bolting, welding, or threading. They may be loose when used with stub ends.
Post-weld strengthening is optional in SS 304L Flanges when welding thin parts. Stainless Steel 304 Flanges (UNS S30400) have great oxidation/corrosion resistance acknowledgements to the content of chromium.

Most Widely Used Austenitic Stainless Steel 304 Flanges, DIN 1.4301 SS Plate Flanges, ASTM A182 SS 304 Long Weld Neck Flanges, 304L SS Spactical Blind Flanges Exporter, SS 304L Pipe Flanges, Stainless Steel DIN 1.4306 Loose Flanges, SS 304 Industrial Flanges Distributors in India.

The pressure ratings for 304L stainless steel flanges vary from 150 to 2500 and PN6 to PN64. These flanges have a high-temperature tolerance and can perform up to 870 degrees Celsius. The flanges are utilized in numerous applications for a range of objectives. Covering the connection, the Stainless Steel DIN 1.4307 Blind Flanges are used to end a pipe.
Stainless steel 304L flanges are used in a wide variety of applications. They are resistant to chemicals found in the textile and paper industries. They are also commonly used in chemical processing and medical processes. These flanges are available in a range of pressure ratings and thicknesses.

Stainless Steel 304 / 304L Flanges Equivalent Grades

Standard SS 304 SS 304L
UNS S30400 S30403
Werkstoff Nr. 1.4301 1.4306/1.4307
EN X5CrNi18-10 X2CrNi18-9 / X2CrNi19-11
BS 304S31 304S11
GOST 08Х18Н10 03Х18Н11
JIS SUS 304 SUS 304L
AFNOR Z7CN18‐09 Z3CN18‐10

SS 304 / 304L Flanges Specification

Specification : ASTM A182 / A240, ASME SA182 / SA240

Dimensions : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Standard :ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges etc.

Pressure Ratings :Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc.

Size : 1/2" (15 NB) to 48" (1200NB)

Flange Face Type :Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)


ASTM A182 / SA240 Stainless Steel 304 / 304L Flanges Useful Info

Element SS 304 SS 304L
Ni 8.0 – 11.0 8.0 – 13.0
C 0.08 0.35
Mn 2.0 max 2.0 max
P 0.045 max 0.045 max
S 0.03 max 0.03 max
Si 1.0 max 1.0 max
Cr 18.0 – 20.0 18.0 – 20.0
Element SS 304 SS 304L
Density 8.0 g/cm3 8.0 g/cm3
Melting Point 1400 °C (2550 °F) 1400 °C (2550 °F)
Tensile Strength Psi – 75000 , MPa – 515 Psi – 75000 , MPa – 515
Yield Strength (0.2%Offset) Psi – 30000 , MPa – 205 Psi – 30000 , MPa – 205
Elongation 35 % 35 %

SS 304 Flange Price List India

Sl No. 304 Stainless Steel Flanges Size Aprox. Wt/Unit FOB 
INR		 CIF
INR		 FOB
USD		 CIF
USD		 FOB
STGP		 CIF
STGP		 FOB
EURO$		 CIF
EURO$
1
SORF Flanges A182 Stainless Steel F304 B16.5 150#
15mm
0.49
349.60
380.00
5.297
5.758
3.567
3.878
6.356
6.909
2
SORF Flanges A182 Stainless Steel F304 B16.5 150#
20mm
0.61
434.70
472.50
6.586
7.159
4.436
4.821
7.904
8.591
3
SORF Flanges A182 Stainless Steel F304 B16.5 150#
25mm
0.90
699.20
760.00
10.594
11.515
7.135
7.755
12.713
13.818
4
SORF Flanges A182 Stainless Steel F304 B16.5 150#
32mm
1.13
737.15
801.25
11.169
12.140
7.522
8.176
13.403
14.568
5
SORF Flanges A182 Stainless Steel F304 B16.5 150#
40mm
1.48
854.45
928.75
12.946
14.072
8.719
9.477
15.535
16.886
6
SORF Flanges A182 Stainless Steel F304 B16.5 150#
50mm
2.37
1164.95
1266.25
17.651
19.186
11.887
12.921
21.181
23.023
7
SORF Flanges A182 Stainless Steel F304 B16.5 150#
65mm
3.60
2096.45
2278.75
31.764
34.527
21.392
23.253
38.117
41.432
8
SORF Flanges A182 Stainless Steel F304 B16.5 150#
80MM
4.10
2794.50
3037.50
42.341
46.023
28.515
30.995
50.809
55.227
9
SORF Flanges A182 Stainless Steel F304 B16.5 150#
100mm
6.04
3105.00
3375.00
47.045
51.136
31.684
34.439
56.455
61.364
10
SORF Flanges A182 Stainless Steel F304 B16.5 150#
125mm
6.53
3493.70
3797.50
52.935
57.538
35.650
38.750
63.522
69.045
11
SORF Flanges A182 Stainless Steel F304 B16.5 150#
150mm
7.78
4968.00
5400.00
75.273
81.818
50.694
55.102
90.327
98.182
12
SORF Flanges A182 Stainless Steel F304 B16.5 150#
200mm
12.98
9004.50
9787.50
136.432
148.295
91.883
99.872
163.718
177.955
13
SORF Flanges A182 Stainless Steel F304 B16.5 150#
250mm
17.96
11643.75
12656.25
176.420
191.761
118.814
129.145
211.705
230.114

SS 304 Flanges Weight Chart

15mm (1/2") Stainless Steel 304 Flanges Weight Chart

O.D. Flange  Thk. Of Flange Min  Diam.
of
Hub 		 Diameter of Raised Face  Length Hub.Y Thread Length Diam. 
of Bolt
Circle		 Diam. 
of Bolt
Holes		 Number
of Bolts		 Diam. of
Bolts
(inch)		 KG LB
inch
dn
O
C
X
G
Y
T
BC
BH
BN
BD
1/2"
15
89.00
11.20
30.20
35.10
15.70
15.70
60.50
15.80
4
1/2"
0.4
0.9
3/4"
20
98.50
12.70
38.10
42.90
15.70
15.70
69.90
15.80
4
1/2"
0.7
1.5
1"
25
108.00
14.20
49.30
50.80
17.50
17.50
79.30
15.80
4
1/2"
0.8
1.8
1-1/4"
32
117.50
15.70
58.70
63.50
20.60
20.60
88.90
15.80
4
1/2"
1.2
2.6
1-1/2"
40
127.00
17.50
65.00
73.20
22.40
22.40
98.60
15.80
4
1/2"
1.5
3.3
2"
50
152.50
19.10
77.70
91.90
25.40
25.40
120.70
19.10
4
5/8"
2.3
5.1
2-1/2"
65
178.00
22.40
90.40
104.60
28.40
28.40
139.70
19.10
4
5/8"
3.7
8.1
3"
80
190.50
23.90
108.00
127.00
30.20
30.20
152.40
19.10
4
5/8"
4.1
9
3-1/2"
90
216.00
23.90
122.20
139.70
31.80
31.80
177.80
19.10
8
5/8"
5.1
11.2
4"
100
228.50
23.90
134.90
157.20
33.30
33.30
190.50
19.10
8
5/8"
5.9
13
5"
125
254.00
23.90
163.60
185.70
36.60
36.60
215.90
22.40
8
3/4"
7
15.4
6"
150
279.50
25.40
192.00
215.90
39.60
39.60
241.30
22.40
8
3/4"
8.4
18.5
8"
200
343.00
28.40
246.10
269.70
44.50
44.50
298.50
22.40
8
3/4"
13
28.6
10"
250
406.50
30.20
304.80
323.90
49.30
49.30
362.00
25.40
12
7/8"
18
39.5
12"
300
482.50
31.80
365.30
381.00
55.60
55.60
431.80
25.40
12
7/8"
29
64
14"
350
533.50
35.10
400.10
412.80
57.20
57.20
476.30
28.50
12
1"
39
86
16"
400
597.00
36.60
457.20
469.90
63.50
63.50
539.80
28.50
16
1"
47
103
18"
450
635.00
39.60
505.00
533.40
68.30
68.30
577.90
31.80
16
1 1/8"
57
126
20"
500
698.50
42.90
558.80
584.20
73.20
73.20
635.00
31.80
20
1 1/8"
76
167
24"
600
813.00
47.80
663.40
692.20
82.60
82.60
749.30
35.10
20
1 1/4"
97
214

Stainless Steel 304 Pipe Flange Pressure Ratings

Stainless Steel 304 Flange Standards / Types and Pressure Class :

ASME/ANSI B 16.36 Welding Neck Flange, Slip on Flange, Threaded Flange
PRESSURE CLASS 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.5 Welding Neck Flange, Slip on Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Ring Type Joint Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.47 Welding Neck Flange, Blind Flange [Series A & B]
PRESSURE CLASS 75, 150, 300, 400, 600, 900
BS 4504 SEC 3.1 Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange
PRESSURE CLASS PN 2.5 TO PN 40
BS 4504[PART 1] Welding Neck Flange, Hubbed Slip-On Hubbed Threaded, Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange
PRESSURE CLASS PN 2.5 TO PN 400
BS 1560 BOSS Welding Neck Flange, Socket Welding Flange, Slip-On Flange, Blind Flange, Screwed Boss Flange, Lapped Flange
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

Size Chart of Stainless Steel Blind Flange

Nominal Pipe Size Outside Diameter of Flanges tdickness of Flanges Diameter of Raised Face Diameter of Hub at Base Lengtd tdru Hub Diameter or Bore Diameter of Hub at Bevel Radius of Fillet Deptd of Socket
Welding Neck Slip-On tdreaded Socket Lap Joint Slip-on Socket Lap Joint
O Q R X Y Y Y W B H r Z
3/4 3-7/8 1/2 1-11/16 1-1/2 2-1/16 5/8 5/8 1.09 1.11 1.05 1/8 7/16
2-1/2 7 7/8 4-1/8 3-9/16 2-3/4 1-1/8 1-1/8 2.94 2.97 2.88 5/16 3/4
1 4-1/4 9/16 2 1-15/16 2-3/16 11/16 11/16 1.36 1.38 1.32 1/8 1/2
1-1/4 4-5/8 5/8 2-1/2 2-5/16 2-1/4 13/16 13/16 1.70 1.72 1.66 3/16 9/16
1/2 3-1/2 7/16 1-3/8 1-3/16 1-7/8 5/8 5/8 .88 .90 .84 1/8 3/8
1-1/2 5 11/16 2-7/8 2-9/16 2-7/16 7/8 7/8 1.95 1.97 1.90 1/4 5/8
2 6 3/4 3-5/8 3-1/16 2-1/2 1 1 2.44 2.46 2.38 5/16 11/16
3 7-1/2 15/16 5 4-1/4 2-3/4 1-3/16 1-3/16 3.57 3.60 3.50 3/8 13/16
3-1/2 8-1/2 15/16 5-1/2 4-13/16 2-13/16 1-1/4 1-1/4 4.07 4.10 4.00 3/8 7/8
4 9 15/16 6-3/16 5-5/16 3 1-5/16 1-5/16 4.57 4.60 4.50 7/16 15/16
5 10 15/16 7.5/16 6-7/16 3-1/2 1-7/16 1-7/16 5.66 5.69 5.56 7/16 15/16
20 27-1/2 1-11/16 23 22 5-11/16 2-7/8 4-1/16 20.20 20.25 20.00 1/2 2-1/8
6 11 1 8-1/2 7-9/16 3-1/2 1-9/16 1-9/16 6.72 6.75 6.63 1/2 1-1/16
10 16 1-3/16 12-3/4 12 4 1-15/16 1-15/16 10.88 10.92 10.75 1/2 1-5/16
12 19 1-1/4 15 14-3/8 4-1/2 2-3/16 2-3/16 12.88 12.92 12.75 1/2 1-9/16
14 21 1-3/8 16-1/4 15-3/4 5 2-1/4 3-1/8 14.14 14.18 14.00 1/2 1-5/8
16 23-1/2 1-7/16 18-1/2 18 5 2-1/2 3-7/16 16.16 16.19 16.00 1/2 1-3/4
8 13-1/2 1-1/8 10-5/8 9-11/16 4 1-3/4 1-3/4 8.72 8.75 8.63 1/2 1-1/4
18 25 1-9/16 21 19-7/8 5-1/2 2-11/16 3-13/16 18.18 18.20 18.00 1/2 1-15/16
24 32 1-7/8 27-1/4 26-1/8 6 3-1/4 4-3/8 24.25 24.25 24.00 1/2 2-1/2

Stainless Steel 304L Weld Neck Flanges Physical Properties

Grade Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity(W/m.K) Specific Heat 0-1000C(J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
Stainless Steel 304L Flanges 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

Stainless Steel 304L Socket Weld Flange Schedule Chart

NPS (Nominal Pipe Size) SORF (Slip On) NPT (Threaded) SWRF (Socket Weld) Loose (Lap Joint) BLRF (Blind) WRNR (Weld Neck)
½ 1 1 2 1 2 2
¾ 2 2 2 2 2 2
1 2 2 2 2 2 3
1¼ 3 3 3 3 3 3
1½ 3 3 3 3 4 4
2 5 5 5 5 5 6
2½ 8 8 8 8 7 10
3 9 9 9 9 9 11.5
3½ 11 12 11 11 13 12
4 13 13 13 13 17 16.5
5 15 15 15 15 20 21
6 19 19 19 19 27 26
8 30 30 30 30 47 42
10 43 43 43 43 70 54
12 64 64 64 64 123 88
14 90 90 90 105 140 114
16 106 98 98 140 180 140
18 130 130 130 160 220 165
20 165 165 165 195 285 197
22 185 185 185 245 355 225
24 220 220 220 275 430 268

Werkstoff No. 1.4306 Large Diameter Flanges Tolerances

Stainless Steel 304L FlangesTolerance Table
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)
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)
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)
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)
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)
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
C Thickness
  • 18" and smaller: ±1/8" (3.2 mm), -0"
  • 20" and larger: ±3/16" (4.8 mm), -0"
K Length of hub
  • 10" and smaller: ±1/16" (1.6 mm)
  • 12" and larger: ±1/8" (3.2 mm)

SS 304 / 304L Pipe Flanges Supplier

We Supply SS 304 / 304L Pipe Flanges in Jakarta, Ulsan, Singapore, Jeddah, Vung Tau, Nashik, Gurgaon, Cairo, Noida, Calgary, Doha, Haryana, New Delhi, Al Khobar, Kanpur, Surat, Bengaluru, Sydney, Dubai, Bogota, Navi Mumbai, Nagpur, Thane, Toronto, Baroda, Al Jubail, Melbourne, Pimpri-Chinchwad, Algiers, Jaipur, London, Kolkata, Colombo, Lagos, Ernakulam, Muscat, Perth, Rajkot, Lahore, Dammam, Petaling Jaya, Tehran, Visakhapatnam, Riyadh, Chennai, Kuala Lumpur, Ludhiana, Rio de Janeiro, New York, Ranchi, Madrid, Thiruvananthapuram, Hanoi, Sharjah, Ahmedabad, Atyrau, Los Angeles, Kuwait City, Coimbatore, Ahvaz, Montreal, Pune, Seoul, Dallas, Busan, Houston, Chandigarh, Geoje-si, Abu Dhabi, Port-of-Spain, Mumbai, Milan, Karachi, La Victoria, Bangkok, Brisbane, Courbevoie, Vadodara, Santiago, Faridabad, Howrah, Granada, Manama, Ho Chi Minh City, Gimhae-si, Indore, Caracas, Hyderabad, Secunderabad, Aberdeen, Istanbul, Jamshedpur, Edmonton, Moscow, Mexico City, Bhopal, Chiyoda, Ankara, Hong Kong.

Stainless Steel 304 / 304L Plate Flanges Availability Worldwide

We Export SS 304 / 304L Plate Flanges in Lithuania, Bhutan, Yemen, Zimbabwe, Trinidad & Tobago,Tunisia, Slovakia, Kuwait, Jordan, Hungary, Puerto Rico, Belarus, Bangladesh, Iraq, Colombia, Sri Lanka, Mexico, Switzerland, Denmark, Hong Kong, India, Croatia, Namibia, Norway, Bahrain, Tibet, Singapore, China, Afghanistan, Serbia, Nigeria, Turkey, Bolivia, Azerbaijan, Argentina, Malaysia, South Africa, Philippines, Mongolia, Ecuador, Venezuela, Mexico, Japan, United States, Chile, Thailand, Morocco, Saudi Arabia, Algeria, Netherlands, Qatar, Spain, Belgium, Nepal, Oman, United Kingdom, Bulgaria, Poland, Portugal, Kazakhstan, Costa Rica, Ghana, Libya, Italy, Germany, Kenya, Pakistan, Greece, France, Canada, Lebanon, United Arab Emirates, Australia, Ireland, Austria, Russia, Poland, South Korea, Finland, Ukraine, Romania, New Zealand, Peru, Angola, Gambia, Macau, Egypt, Nigeria, Indonesia, Iran, Vietnam, Czech Republic, Iran, Chile, Israel, Taiwan, Sweden, Gabon, Brazil, Estonia.

Stainless Steel 304 / 304L Flanges Other Available Products

Stainless Steel 304 Flanges Stainless Steel 304L Socket Weld Flanges
Stainless Steel 304 Slip On Flanges Stainless Steel 304 Blind Flanges
SS UNS S30400 Loose Flanges Stainless Steel 304L Weld Neck Flanges
SS 304 Long Weld Neck Flanges Suppliers SS 304L Threaded Flanges
SS 304 Industrial Flanges Dealer SS 304L Reducing Flanges Exporter
SS 304 Ring Type Joint Flanges Stockholder Steel 304 Pipe Flanges Distributors
Stainless UNS S30403 Orifice Flanges SS 304 Spactical Blind Flanges Manufacturer
Stainless Steel DIN 1.4301 WNRF Flanges Stainless Steel DIN 1.4306 RTJ Flanges
Stainless Steel 304 SORF Flanges Stainless 304 SWRF Flanges
SS 304 Screwed Flanges SS 304L BLRF Flanges Stockist
ASTM A182 Stainless Steel 304 Plate Flanges ASME SA182 Stainless Steel 304 Pipe Flanges

Stainless Steel 304 / 304L Flanges Application Industry