Alpha Overseas is a top manufacturer and supplier of SS 347 / 347H Flanges.
Alloy 347 is a columbium-containing stabilized austenitic chromium steel that enables the eradication of carbide precipitation and, as a result, intergranular corrosion. Alloy 347 offers stronger creep and stress rupture properties than alloys 304 and 304L, which may also be utilized for exposures where sensitization and intergranular corrosion are a problem. Alloy 347 is stabilized by the additions of chromium and tantalum. Alloy 347's outstanding corrosion resistance, which is even better than that of alloy 321 because of the addition of columbium, is another benefit. 347H, the higher carbon composition form of Alloy 347, also exhibits improved high temperature and creep capabilities.
Stainless Steel 347 Pipe Flanges, UNS S34700 Slip On Flange, 347 SS Flanges Suppliers, SS 347H Flange, 347 Stainless Steel Flanges, A182 F347 Flang, Stainless Steel 347 Flange, F347H Material Weld Neck Flange, Stainless Steel 347H Flange, SS 347 Flangee, Stainless Steel 347H Flanges Manufacturers in India.
The manufacturing of equipment that must be put into service under highly corrosive conditions and the petroleum refining sectors both regularly use alloy 347.
SS 347 / 347H Flange provides comparable general, overall corrosion resistance to alloy 304. SS 347 / 347H Flanges are used in settings where intergranular corrosion concerns alloys like Alloy 304. SS 347 / 347H Flanges are used most frequently for large welded equipment that cannot be annealed and for machinery that is operated between 800 and 150°F (427 to 816°C). For aqueous and other low-temperature conditions, Alloy 347 is favoured over Alloy 321. SS 347 / 347H Flanges are employed mostly in high-temperature situations where resistance to sensitization is required, preventing lower levels of intergranular corrosion. SS 347 / 347H Flanges are similar to all other 18-8 austenitic stainless steels in terms of oxidation resistance.
347, 347H Stainless Steel 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 |
SS 347, 347H Flange Dimensions
NPS (in.) |
347 Stainless Steel Flange Dimensions | ||||
---|---|---|---|---|---|
Dia. of Flange (in.) |
No. of Bolts |
Dia. of Bolts (in.) |
Dia. of Bolt Holes (in.) |
Bolt Circle (in.) |
|
1/4 | 3-3/8 | 4 | 1/2 | 0.62 | 2-1/4 |
1/2 | 3-1/2 | 4 | 1/2 | 0.62 | 2-3/8 |
3/4 | 3-7/8 | 4 | 1/2 | 0.62 | 2-3/4 |
1 | 4-1/4 | 4 | 1/2 | 0.62 | 3-1/8 |
1-1/4 | 4-5/8 | 4 | 1/2 | 0.62 | 3-1/2 |
1-1/2 | 5 | 4 | 1/2 | 0.62 | 3-7/8 |
2 | 6 | 4 | 5/8 | 0.75 | 4-3/4 |
2-1/2 | 7 | 4 | 5/8 | 0.75 | 5-1/2 |
3 | 7-1/2 | 4 | 5/8 | 0.75 | 6 |
3-1/2 | 8-1/2 | 8 | 5/8 | 0.75 | 7 |
4 | 9 | 8 | 5/8 | 0.75 | 7-1/2 |
5 | 10 | 8 | 3/4 | 0.88 | 8-1/2 |
6 | 11 | 8 | 3/4 | 0.88 | 9-1/2 |
8 | 13-1/2 | 8 | 3/4 | 0.88 | 11-3/4 |
10 | 16 | 12 | 7/8 | 1 | 14-1/4 |
12 | 19 | 12 | 7/8 | 1 | 17 |
14 | 21 | 12 | 1 | 1.12 | 18-3/4 |
16 | 23-1/2 | 16 | 1 | 1.12 | 21-1/4 |
18 | 25 | 16 | 1-1/8 | 1.25 | 22-3/4 |
20 | 27-1/2 | 20 | 1-1/8 | 1.25 | 25 |
24 | 32 | 20 | 1-1/4 | 1.38 | 29-1/2 |
SS 347, 347H Flanges Weight Chart
Pipe Normal Diameter (inch) | Outer diameter Flange | Thicjness Of Flange Minimum | Diameter of Hub |
Diameter of Raised Face | Length Hub.Y | Thread Length | Diameter of Bolt Circle |
Diameter of Bolt Holes |
Number of Bolts |
Diameter of Bolts (inch) |
KG | LB | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 1.4550 Flanges Types

SS 347, 347H Slip On Flange
- Stainless Steel 347 Raised Face Slip On Flange
- Stainless Steel 347H Slip On Pipe Flange
- ASTM A182 GR F347 Slip On Pipe Flange
- 347H SS SORTJ
- 347H Stainless Steel SORF Flange
- AISI 347 SO Flanges
- F347 Stainless Steel RFSO Flanges
- 347H SS FFSO Flanges
- PN16 Slip On Flange Inox AISI 347
- SS 347 Pipe Slip On Flange
- Steel 1.4550 Slip On Raised Face Flange
- SUS 347 Flat Face Slip On Flanges
- SS UNS S34700 Slip-On Flange
- ASTM A182 347H Stainless Steel SOFF Flange

SS 347, 347H Weld Neck Flange
- SUS 347 WNFF Flangs
- SS 347H Weld Neck Flanges ANSI B16.5
- Stainless Steel 347 WNRTJ Flange
- AISI 347 RFWN Flange
- Steel 347 Welding Neck Flanges
- SS 347H Flat Face Weld Neck Flange
- WERKSTOFF NR. 1.4961 WNRF Flanges
- Stainless Steel 347H Weld Neck Flange
- S34708 Steel Weld Neck Flanges
- ASTM A182 F347 Stainless Weld Neck Flange 300
- 347 Stainless Steel Weld Neck Flanges
- 347H SS Raised Face Weld Neck Flange
- ASME SA182 347H Welding Neck Flanges 150#

SS 347, 347H Blind Flange
- SA182 F347H SS BL Flange
- Stainless Steel 347H Blind Flange
- 347 Stainless Steel BLRTJ Flange
- Steel 347H Blind Plate Flanges
- ASTM A182 F347 Stainless Steel BLRTJ Flange
- 347 SS Blind Pipe Flanges
- ASME B16.5 SS 347 Blind Raised Face Flange
- 347 SS BLFF Flanges
- Stainless Steel 347H Blind Flanges
- Stainless Steel 347 BLRF Flange
- Stainless Steel 1.4550 RTJ Blind Flange
- UNS S34700 Stainless Steel BLFF Flanges
- INOX 347H Pipe Blind Flange

SS 347, 347H Threaded Flange
- AISI 347 Stainless Steel Female Threaded Flange
- Stainless Steel 347H Threaded Flanges
- Stainless Steel 347H 3 inch Threaded Pipe Flanges
- 347 SS Male Threaded Flange
- ASME SA182 F347H SS Screwed Flanges
- ASTM A182 F347 Stainless Steel NPT Threaded Flange
- SS 347 Raised Face Threaded Flange
- Stainless Steel 347H Threaded Flange
- UNS S34708 Reducing Threaded Flange
- SS 347H Threaded Pipe Flange
- Steel 347 Grade Threaded Flange
- ASTM A182 F347 Stainless Steel Thread Flange

SS 347, 347H Socket weld Flange
- ASME SA182 F347 SS Flange sw rf
- Stainless Steel 1.4961 SWFF Flanges
- 347H Stainless Steel 300# Socket Weld Flange
- UNS S34700 Socket Weld Raised Face Flange
- AISI 347 Flat Face Socket Weld Flange
- Steel Grade 347 Socket Welding Flange
- SS 347 Raised Face Socket Weld Flanges
- 347 SS SWRTJ Flanges
- 347 Stainless Steel RFSW Flanges
- ASME B16.5 Stainless Steel 347 SW Flange
- SUS 347H Socket Weld Pipe Flange
- Stainless Steel 347H SWRF Flanges
- Stainless Steel 347H Socket weld Flange

SS 347, 347H Long Weld Neck Flange
- ASTM A182 347 Stainless Steel LWNRF Flanges
- AISI 347 SS Long Weld Neck Raised Face Flange
- SS 347H Raised Face Long Weld Neck Flange
- 347 Stainless Steel LWN Flanges
- Stainless Steel 347 RFLWN Flange
- Stainless Steel 347H Long Weld Neck Flange
- Stainless Steel 347 Long Welding Neck Flanges
- 347 SS Long Welding Neck Flange
- Stainless Steel UNS S34708 LWN Flange
- SS 347H ASME B16.5 Long Weld Neck Flanges

SS 347, 347H Lap Joint Flange
- SUS 347 Raised Face Lap Joint Flange
- Stainless Steel A182 F347H LJFF Flange
- Stainless 347 Flange Lap Joint Stub End
- Stainless Steel 347H Lap Joint Flange
- 347 Stainless Steel Lap Joint Flange
- ASME SA182 F347 SS LJ Flanges
- SS 347 Lap Joint Flange with stub end
- 347H SS LJRF Flanges
- SS 347 Flange Lap Joint
- SS S34700 Lap Joint Pipe Flange
- Stainless Steel 347H LJ Flanges
- ANSI B16.5 Steel 347H Lapped Joint Flange
- 347 Stainless Steel Flat Face Lap Joint Flange

SS 347, 347H Plate Flange
- SS 347 din 2501 pn10 plate flange
- Stainless Steel 1.4550 Plate Flanges
- ASME SA182 F347 SS Plate Flange en 1092
- 347H SS Plate Flanges
- Stainless Steel 347H Plate Flange
- 347 Stainless Steel Plate Flanges
- UNS S34708 Plate Flanges
- Stainless Steel 347 Plate Flange
- ASTM A182 F347H Stainless Steel Plate Flange
- SS 347H Plate Flange
- SS 347 ANSI B16.5 Plate Flanges
- AISI 347H Plate Flanges Class 150

SS 347, 347H Orifice Flange
- Stainless Steel 347H Orifice Flanges
- ASTM A182 F347 Orifice Pipe Flange
- 347H SS Orifice Flanges
- SS 347 Orifice Plate Flange
- Stainless Steel 347H Orifice Flange
- ANSI B16.36 SS 347 Orifice Flanges
- ASME SA182 F347H SS RTJ Orifice Flange
- UNS S34700 Steel Orifice Flanges
- 347 Stainless Steel Class 150 Orifice Flange
- Stainless Steel 1.4961 Orifice Flanges
- AISI 347H Raised Face Orifice Flanges
- 347 SS Orifice Flanges
- 347H SS ASME B16.36 Orifice Flange
Specialized in Following ASTM A182 347, 347H Stainless Steel Flanges
- Stainless Steel 1.4550 Spacer Ring Flanges
- AISI Type 347H Stainless Steel Loose Plate Flange
- 347H SS Paddle Blank and Spacer
- Stainless Steel 347 Flange Suppliers
- Inox 347 Large Tongue Flange Stock
- Stainless Steel 347 Flanges Suppliers in India
- Grade 347 Stainless Steel Slip On Plate Flange
- SS 347 Flat Face Flanges
- ASTM A182 F347H Pipe Flanges
- ANSI/ASME B16.5 347 SS Flange Supplier in Mumbai
- ASTM A182 347H Stainless Steel Flange
- SS 347H Industrial Pipe Flange
- UNS S34700 Large Diameter Flange
- Manufacturer of Stainless Steel 347 Flanges
- 347 SS Flange Manufacturer in Mumbai
- 347H Stainless Steel Flange Manufacturer
- Stainless Steel 347H Groove Flange
- Stainless Steel A182 F347 Forged Flanges
- ASME B16.5 Steel 347H Pipe Flange Spacer Ring
- Stainless Steel 347 Flanges Stockist
- Stainless Steel 347H Ring Type Joint Flanges
- 347H Stainless Steel Spectacle Blind Flanges
- SUS347 Tongue and Groove Flanges Dealers
- 347H SS Flange Pressure Rating
- 347 Stainless Steel Flangeolet
- ASTM A182 347H Stainless Steel Nipoflange
- SS 347 Flanges at Best Price List In India
- ASTM A182 Stainless Steel 347H Flanges
- Steel Grade 347 Blind Spectacle Flange
- 347 Stainless Steel Custom Flanges
- Stainless Steel 347 NPT Flanges
- 347 Stainless Steel Exhaust Flanges
- 347H Stainless Steel Raised Face Flange
- Supplier of SS 347H Slip On Flat Face Flange
- ASTM A182 SS 347 Paddle Blind Flange
- Stainless Steel 347 Reducing Flange
- Stainless Steel 347H Flat Face Flange
- Stainless Steel 347 RTJ Flange Exporter
UNS S34709 Flange Pressure Rating Chart
ASME | Pressure Temperature Ratings For Stainless Steel 347 Flanges | ||||||
Temperature °F | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 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 |
SS 347, 347H Flange Price List India
Check out the 347 Stainless Steel Flange Price List.
Stainless Steel 347,347H Flange in India | SS 347,347H Flange Price in INR |
Stainless Steel Flanges A182 F347,347H, 150, 300, 600 LBS, 900 LBS, 1500#, Class 2500 | Rs. 319 |
Flanges A182 F347,347H B16.5 | Rs. 3,066 |
347,347H Stainless Steel Class 150 Flanges as per ASME B 16.5 | Rs. 4,118 |
Pn16 Dn65 Dn80 SUS SS 347,347H Flange | Rs. 217 |
347,347H Stainless Steel Plate Flange | Rs. 4,103 |
Stainless Steel Flange 347,347H | Rs. 4,106 |
Stainless Steel 347,347H Flanges Standard
For more information on flange standards, or to learn more about custom flanges for particular specifications, contact us today.
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Chemical Composition of SA 182 347, 347H Stainless Steel Flanges
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 |
347, 347H SS Flanges 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 % |
Applications of Stainless Steel 347, 347H Flanges
We Export Stainless Steel 347, 347H Flanges Across the Globe
Taiwan, Algeria, Bangladesh, New Zealand, Mexico, Iraq, Romania, Lahore, Chile, Turkey, Austria, South Africa, Singapore, Bolivia, Libya, Jordan, Puerto Rico, Egypt, Costa Rica, Vietnam, Iran, Serbia, Bhutan, Macau, Russia, Pakistan, Canada, Peru, Namibia, Estonia, France, United States, Japan, Kazakhstan, Ghana, Czech Republic, Sweden, Colombia, Nigeria, Lithuania, Brazil, China, South Korea, Angola, Azerbaijan, Bahrain, Spain, Gambia, Thailand, Tunisia, Ukraine, Bulgaria, Algiera, Australia, Mongolia, Indonesia, Morocco, Kuwait, Venezuela, India, Belarus, Hungary, Oman, United Kingdom, Switzerland, Afghanistan, Israel, Croatia, Nepal, Slovakia, Ireland, Gabon, Kenya, Germany, Belgium, Philippines, Zimbabwe, Yemen, Hong Kong, Italy, Saudi Arabia, columbia, Argentina, Greece, Trinidad & Tobago, United Arab Emirates, Netherlands, Sri Lanka, Qatar, Poland, Norway, Tibet, Finland, Denmark, Malaysia, Ecuador, Portugal, Lebanon.
Domestic Supply A182 Gr 347, 347H Flanges
Chandigarh, Pune, Ahmedabad, Faridabad, Bhopal, Surat, New Delhi, Secunderabad, Bengaluru, Jaipur, Rajkot, Navi Mumbai, Haryana, Nagpur, Kolkata, Indore, Thane, Kanpur, Visakhapatnam, Pimpri-Chinchwad, Chennai, Ranchi, Noida, Nashik, Jamshedpur, Howrah, Thiruvananthapuram, Gurgaon, Ludhiana, Ernakulam , mumbai, Hyderabad.