Ninthore Overseas is one of the Leading Manufacturer and Exporter of Inconel 625 Flanges, which has excellent features such as precise dimensions, durable built, perfect finish, and more. Inconel 625 Slip On Raised Flanges (UNS N06625) is good for sea water applications and is oxidation resistance along with having excellent weldability and braze – ability. The ability of Inconel 625 Threaded Flanges to withstand high stress and a wide range of temperatures, both in and out of water, as well as being able to resist corrosion while being exposed to highly acidic environments makes it a fitting choice for nuclear and marine applications. Inconel 625 Weld Neck Flanges has outstanding resistance to pitting, crevice corrosion and inter-crystalline corrosion.

Inconel 625 Blind Flanges is resistant to seawater, in both flowing and stagnant conditions, and under fouling. Meanwhile, these Inconel 625 Socket Weld Flanges are also being offered in different sizes and shapes to our customers. Applications of Inconel 625 Lap Joint Flanges include and are not limited to: sea water applications, chemical processing, nuclear and aerospace.

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Potential applications of Inconel 625 Ring Joint Type Flanges are springs, seals, electrical cable connectors, bellows for submerged controls, fasteners, oceanographic instrument components and flexure devices. Some typical applications Inconel 625 Spectacle Blind Flanges is used in are marine engineering, pollution – control equipment, and nuclear reactors. Nickel and molybdenum in Inconel 625 Long Weld Neck Flanges provide for resistance to non – oxidizing atmospheres.

Inconel 625 Pipe Flanges Specifications
Specifications : ASTM B564 / ASME SB564
Size : 1/2″NB TO 60″NB
: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Class / Pressure : 150#, 300#, 625#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Inconel Alloy 625 Pipe Flanges Chemical Composition

Grade C Mn Si S Cu Fe Ni Cr
Inconel 625 0.10 max 0.50 max 0.50 max 0.015max 5.0 max 58.0 min 20.0 – 23.0

Inconel 625 Plate Flanges Mechanical Properties

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
Inconel 625 8.4 g/cm3 1350 °C (2460 °F) Psi – 1,35,000 , MPa – 930 Psi – 75,000 , MPa – 517 42.5 %

Equivalent Grades for 625 Inconel Industrial Pipe Flanges

Inconel 625 2.4856 N06625 NCF 625 NA 21 ХН75МБТЮ NC22DNB4MNiCr22Mo9Nb NiCr23Fe

Alloy 625 Flanges Application Industries

  • Off-Shore Oil Drilling Companies
  • Power Generation
  • Petrochemicals
  • Gas Processing
  • Specialty Chemicals
  • Pharmaceuticals
  • Pharmaceutical Equipment
  • Chemical Equipment
  • Sea Water Equipment
  • Heat Exchangers
  • Condensers
  • Pulp and Paper Industry

Inconel 625 Pipe Flanges Test Certificates

We at Ninthore Overseas provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report. We also provide Standard certificates like EN 10204 3.1 and additional requirement like. NACE MR 01075. FERRIT CONTENT as per norms if requested by clients.

• EN 10204/3.1B,
• Raw Materials Certificate
• 100% Radiography Test Report
• Third Party Inspection Report, etc.

Material Testing

We at Ninthore Overseas ensure that all our materials go through strict quality tests before dispatching them to our clients.

• Mechanical Testing Such as Tensile of Area
• Hardness Test
• Chemical Analysis – Spectro Analysis
• Positive Material Identification – PMI Testing
• Flattening Test
• Micro and Macro Test
• Pitting Resistance Test
• Flaring Test
• Intergranular Corrosion (IGC) Test


• Commercial Invoice which includes HS Code
• Packing List including net weight and gross weight, number of boxes, Marks and Numbers
• Certificate of Origin legalized/attested by Chamber of Commerce or Embassy
• Fumigation Certificates
• Raw Material Test Reports
• Material Traceability Records
• Quality Assurance Plan (QAP)
• Heat Treatment Charts
• Test Certificates certifying NACE MR0103, NACE MR0175
• Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2
• Guarantee Letter
• NABL approved Laboratory Test Reports
• Welding Procedure Specification/Procedure Qualification Record, WPS/PQR
• Form A for the purposes of the Generalized System of Preferences (GSP)