What is Stainless Steel 347/347H Flanges ?

Stainless steel 347H flanges are made of high quality grade. This grade is made of high quality raw material and alloys. Stainless steel 347H flanges are ductile and strong. These flanges are enriched with excellent properties and characteristics.

These flanges are highly ductile and hence it is used as boilers in some factories. They are also used in heavy exhaust systems as it has high heat tolerance and boiling point. Stainless steel 347 flanges provide great deterioration.

These flanges are made of a great combination of excellent elements. These elements are enriched with high resistance and tolerance. This grade includes high amounts of chromium, nickel and carbon. The composition includes 17% chromium, 9% of nickel content. The grade also includes other elements like silicon, manganese, sulfur, cobalt, phosphorus and iron.


SS UNS S34700 flanges in USA, Stainless Steel 347 Plates, SS 347 Flanges, 347 Stainless Steel Hot Rolled flanges in Brazil, SS Werkstoff No 1.4550 flanges in UAE, Qatar, Stainless Steel 347 flanges, Stainless Steel 347 Cold Rolled flanges.

Stainless steel 347 flanges are highly resistant to corrosion, crevice corrosion and stress cracking. It also provide protection from other chemical and physical properties. The high amount of chromium and nickel provide excellent protection and strength to the grade. It also increases its elongation and melting point. It also increases its tensile and yield strength and improves its robustness. The minimum yield strength of the grade is 25mpa whereas the tensile strength is 515 Mpa.

Stainless Steel 347 & 347H Flanges Specifications

Specifications ASTM A182 / ASME SA182
Standard ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size Range 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 , as per Customer Requirements
Dimensions ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Surface pickling, annealing, bright, sand blast, hair line
Type Weld Neck Ring Flange (WNRF), 310 Stainless Steel, Slip-On Ring Flange (SORF), 310 Stainless Steel, Blind Ring Flange (BLRF), 310 Stainless Steel, Socket Weld Ring Flange (SWRF), 310 Stainless Steel, Threaded Ring Flange, 310 Stainless Steel, Lap Joint Ring Flange (LJRF), 310 Stainless Steel, Ring Type Joint Flange (RTJF), 310 Stainless Steel
Connection type Raised Face, Flat Face, Ring Type Joint, Lap-Joint Face, Large Male-Female, Small Male-Female, Large Tongue, Groove, Small Tongue, Groove.
Test Certificates EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc
SS 347 1.4550 S34700 SUS 347 08Ch18N12B X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H X6CrNiNb18-12
Grade C Mn Si P S Cr Cb Ni Fe
SS 347 0.08 max 2 max 1.0 max 0.045 max 0.030 max 17 – 20 10xC – 1.10 9.0-13.0 62.74 min
SS 347H  0.04 – 0.10 2 max 1.0 max 0.045 max 0.030 max 17 –19 8xC – 1.10 9.0-13.0 62.72 min
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 %
Stainless Steel 347/347H Flanges

Other Products

SS 347/347H SORF Flanges SS 347/347H WNRF Flanges
SS 347/347H Blind Flanges SS 347/347H Spacer Ring Flanges
SS 347/347H Ring Type Joint Flanges SS 347/347H Nipolet Flanges
SS 347/347H Nipo Flange SS 347/347H Long weld Neck Flanges
SS 347/347H Stainless Steel Pipe Flanges SS 347/347H Nipolet Flanges
SS 347/347H Flat Flange SS 347/347H Lap Joint Flanges

Stainless Steel 347 & 347H Flanges Price List

  • 347 Flanges
    US $0.5-1000 / Piece (FOB Price)
  • SS 347H Pipe Flanges
    US $300-500 / Ton (FOB Price)
  • Stainless Steel 347 Weld Neck Flanges
    US $1-900 / Piece (FOB Price)
  • ASTM A182 347 stainless steel plate flanges
    US $0.5-1000 / Piece (FOB Price)
  • 347H Pipe Flanges
    US $1-300 / Piece (FOB Price)

Different Types of Stainless Steel 347 Flanges

  • Stainless Steel 347 Plate Flange
  • UNS S34700 Plate Flange
  • WNR 1.4550 Plate Flanges
  • ASTM A182 Plate Flanges
  • Grade 347 Plate Flanges
  • Stainless Steel 347H Threaded Flange
  • UNS S34709 Threaded Flange
  • WNR 1.4961 Threaded Flange
  • ASTM A182 Threaded Flange
  • Grade 347H Threaded Flange
  • Stainless Steel 347 Weld Neck Flange
  • UNS S34700 Weld Neck Flange
  • WNR 1.4550 Weld Neck Flange
  • ASTM A182 Weld Neck Flange
  • Grade 347 Weld Neck Flange


We Sumit Impex Metal Ensure the Best Quality of Packing, Because It Plays an Important Role Especially in the Case of International Shipments in Which Consignment Passes Through Various Channels to Reach the Ultimate Destination, So We Put Extraordinary Concern Regarding Packaging.

We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,

  • Boxes and Crates
  • Shrink-wrapped
  • Carton boxes
  • Wooden pallets
  • Wooden boxes
  • Wooden crates

Testings (Destructive, Non Destructive)

  • Mechanical Testing Such as Tensile, Elongation, Reduction of Area
  • Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
  • Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
  • Positive Material Identification – PMI Testing
  • Chemical Analysis – Spectro Analysis
  • Intergranular Corrosion (IGC) Test
  • Pitting Resistance Test
  • Dye Penetrant Test (DP Test)
  • Micro Test
  • Macro Test
  • Hardness Test
  • Flaring Test
  • Flattening Test
  • Hydrostatic Test
  • Radiography Test
  • Ultra Sonic Test (UT)
  • Eddy Current Testing
  • Impact Test
  • Bend Test

Application Industries

These material are not a single material but the name for a family of corrosion resistant steels. Like many scientific breakthrough the origins of stainless steel lies in a lucky accident. From the smallest part of zipper to the largest building skyscraper, stainless steel is an essential part of modern life.Stainless steel’s strength, resistance to corrosion and low maintenance make it the ideal material for a wide range of applications. It is also has a long life cycle and is 100% recyclable.

  • Construction
  • Bridges
  • Petrochemical Industry
  • Ship Building
  • Engineering
  • General Structural Purposes
  • Offshore and Onshore Services

Stainless Steel 347 Flange Manufacturers

Country we serve / City we deliver

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

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

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