Stainless Steel 347 / 347H Flanges Manufacturer

Global steel india is a supplier of stainless steel 347/347H flanges. Our products are manufactured keeping in mind the internationally recognized standards and are available at competitive prices.

Stainless steel 347 flanges can withstand a wide temperature range. Stainless Steel 347 Flanges are suitable for use in both high and cryogenic temperatures. They’re perfect for applications with a lot of wear and tear. The material is well-known for its exceptional resistance to oxidation and wear. Stainless Steel 347 Flanges are commonly used in large exhaust systems and boilers due to their ability to tolerate harsh conditions and superior mechanical qualities. They are also used for high-temperature and high-pressure service applications. They are used in industries such as offshore oil drilling companies, power generation plants, petrochemicals, gas processing, specialty chemicals, pharmaceuticals, pulp and paper industries, etc.

stainless steel 347H flanges are the higher carbon version of stainless steel 347 flanges. It is used for enhanced creep resistance and for higher strength at temperatures above 1000°F. Stainless steel 347H grade flanges can be welded using conventional welding methods. However, oxyacetylene welding is not preferred. hot work processes can be performed at 1149 to 1232°C (2100 to 2250°F). In order to obtain maximum hardness, 347H stainless steel needs to be water quenched and annealed. Stainless steel 347H flanges are used in Aircraft exhaust stacks and manifolds, Jet engine parts, Weld equipment, and Chemical processing equipment.

What is Stainless Steel 347H Flange?

Stainless steel 347H flange is a type of flange made from the stainless steel alloy 347H, a high carbon version of the popular 347 stainless steel. This type of flange is commonly utilized in high-temperature applications where high strength and corrosion resistance are required. It has excellent oxidation resistance and is commonly used in furnaces and other high-temperature equipment, also in chemical and petrochemical industries.

What are the applications of Stainless Steel 347H Flanges?

Stainless steel 347H flanges are commonly used in high-temperature applications that require high strength and excellent corrosion resistance, like chemical and petrochemical industries, oil and gas, food, pulp, and paper manufacturing. They are often used in furnaces, heat treatment equipment, and power generation facilities.

What is the process for manufacturing Stainless Steel 347H Flanges?

The manufacturing process for Stainless Steel 347H flanges typically involves forging or casting, followed by machining and finishing processes. Forged flanges are made by heating and shaping a billet of steel into the desired shape, while cast flanges are made by pouring molten steel into a mold. Machining processes, such as drilling and tapping, are then used to finish the flanges. Finally, the flanges may be subjected to heat treatment or other finishing processes, such as sandblasting or polishing.

Specification of SS 347,347H Flanges

Standards ASTM A182 / ASME SA182
Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc
Size 1/2″ (15 NB) to 48″ (1200NB)
Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Stainless Steel 347 / 347H Flanges

Equivalent Grades

STANDARD WERKSTOFF NR. UNS JIS GOST EN
SS 347 1.4550 S34700 SUS 347 08Ch18N12B X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H X6CrNiNb18-12

Manufacturing Standards

ASME/ANSI B16.5 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 B16.47 Blind Flange [Series A & B],Welding Neck Flange
PRESSURE CLASS 75, 150, 300, 400, 600, 900
ASME/ANSI B16.36 Orifice 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 Hubbed Threaded,
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 Hubbed Threaded,
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

Different Types

Slip On Flanges

SS 347,347H Slip On Flanges

Blind Flanges

SS 347,347H Blind Flanges

Socket Weld Flanges

SS 347,347H Socket Weld Flanges

Weld Neck Flange

SS 347,347H Weld Neck Flanges

Reducing Flanges

SS 347,347H Reducing Flanges

Orifice Flanges

SS 347,347H Orifice Flanges

Contact us to get a quick quote for your requirement.

We offer These Stainless Steel 347,347H Flanges as per DIN, ASTM, ASME, BS, EN, JIS or ANSI Standard.

Available Stock

  • ASME B16.47 SS 347H Spades Ring Spacers Flanges
  • 347H SS Flanges
  • UNS S34709 Stainless Steel Lap Joint Flanges
  • UNS S34709 Male & Female Flanges
  • Stainless Steel 347 PN 10 Flange
  • ASTM A182 F347 Stainless Steel Flanges
  • Stainless Steel 347 Tongue Flanges
  • 347 SS Pipe Flange
  • INOX 347 Flanges
  • Grade 347 Stainless Steel Flanges
  • Stainless Steel 347H Plate Flange
  • ANSI B16.5 Stainless Steel 347 Expander Flanges
  • SS 347H RTJ Flanges
  • SS 347H Groove Flanges
  • 347 Stainless Steel Nipoflange
  • SS 347 Spectacle Blind Flanges
  • Stainless Steel 347H Flanges
  • SS 347H British Standard Table D Pipe Flanges
  • Stainless Steel 347H Screwed Flanges
  • Austenitic Stainless Steel 347H Flanges
  • SS 347H DIN Flanges
  • SS 347H Lapped Joint Flanges
  • Stainless Steel 347 Spades Ring Spacers Flanges
  • Stainless Steel 347H BS Standard Table E
  • 347H SS Weldo Flanges
  • SS 347 Flat Face Flanges
  • 347H SS 150 LBS Threaded Flanges
  • Stainless Steel 347 Long Welding Neck Flange
  • SS 1.4550 1500 LBS Flanges
  • Stainless Steel 347H Nipo Flanges
  • Type 347H SS Industrial Forged Flanges

Weight Chart

15mm (1/2″) Stainless Steel 347 Flanges Weight Chart

Pipe Normal Diam.
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

Dimensions

AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)
  • ASME B1.20.1, Pipe Threads, General Purpose
  • ASME B16.1, Cast Iron Flanges and Flanged Fittings Classes 25, 125 and 250
  • ASME B16.5, Pipe Flanges and Flanged Fittings NPS 1/2 Through NPS 24
  • ASME B16.11, Forged Fittings, Socket Welding and Threaded
  • ASME B16.25, Buttwelding Ends
  • ASME B16.36, Orifice Flanges
  • ASME B16.47, Large Diameter Steel Flanges NPS 26 Through NPS 60
  • ASME B31.1, Power Piping
  • ASME B31.3, Process Piping
  • ASME B46.1, Surface Texture (Surface Roughness, Waviness, and Lay)

Pressure Rating

ANSI/ASME B16.34 PRESSURE RATING CHART
Temperature °F 150# 300# 400# 600# 900# 1500# 2500#
-20 to 100 275 720 960 1440 2160 3600 6000
200 230 600 800 1200 1800 3000 5000
300 205 540 720 1080 1620 2700 4500
400 190 495 660 995 1490 2485 4140
500 170 465 620 930 1395 2330 3880
600 140 435 580 875 1310 2185 3640
650 125 430 575 860 1290 2150 3580
700 110 425 565 850 1275 2125 3540
750 95 415 555 830 1245 2075 3460
800 80 405 540 805 1210 2015 3360
850 65 395 530 790 1190 1980 3300
900 50 390 520 780 1165 1945 3240
950 35 380 510 765 1145 1910 3180
1000 20 320 430 640 965 1605 2675
1050 20 310 410 615 925 1545 2570
1100 20 255 345 515 770 1285 2145
1150 20 200 265 400 595 995 1655
1200 20 155 205 310 465 770 1285
1250 20 115 150 225 340 565 945
1300 20 85 115 170 255 430 715
1350 20 60 80 125 185 310 515
1400 20 50 65 95 145 240 400
1450 15 35 45 70 105 170 285
1500 10 25 35 55 80 135 230

Chemical Structure

Grade C Mn Si P S Cr Cb Ni Fe
SS 347 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 20.00 10xC – 1.10 9.00 – 13.00 62.74 min
SS 347H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 8xC – 1.10 9.0 -13.0 63.72 min

Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1454 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

We Serve Application Industry

Application Industry

ANSI / ASME 16.5, 16.48, 16.47 Flanges applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.

Oil & Gas Industry

Petrochemical Industry

Power Generation Industry

Chemical Industry

We Export Stainless Steel 347,347H Flanges Across the Globe

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

Domestic Supply Stainless Steel 347,347H Flanges

Kanpur, Ahmedabad, Pimpri-Chinchwad, Thane, New Delhi, Howrah, Chennai, Visakhapatnam, Ranchi, Haryana, Bengaluru, Kolkata, Hyderabad, Bhopal, Ernakulam , Ludhiana, Secunderabad, mumbai, Rajkot, Chandigarh, Navi Mumbai, Indore, Surat, Faridabad, Pune, Nagpur, Gurgaon, Jamshedpur, Nashik, Thiruvananthapuram, Noida, Jaipur.
Global Steelindia

Global Steel is a significant manufacturer and exporter of all ferrous and non-ferrous metals. As a pioneer and leader in the industry, Global Steel is at the forefront of technology and research.

Quick Contact

Shop No.6, Sonarika Bldg, 25/C, Chandawadi, Cawasji Patel Tank, Mumbai, Maharashtra 400004