Inconel 601 Flanges Manufacturer, Supplier & Exporter

What Are Inconel 601 Flanges? Properties & Overview of ASTM B564 Alloy 601 Pipe Flanges

Solitaire Overseas is a leading Inconel 601 Flanges manufacturer, supplier and exporter with its base in Mumbai, India. Our ASTM B564 Inconel 601 Flanges — also referred to as Alloy 601 Flanges (UNS N06601 / Werkstoff Nr. 2.4851) — are precision-forged using certified raw material and produced with close attention to quality standards, to conform to international piping standards.

Inconel 601 is a nickel-chromium alloy that is highly resistant to oxidation, scaling and carburization, up to a temperature of 1260 °C (2300 °F). The nickel content (58–63%) and additions of aluminium create a very adhesive oxide scale which does not spall out even with repeated heating and cooling, so that our Alloy 601 Flanges are many times better than traditional stainless-steel flanges in high-temperature service.

Our UNS N06601 Flanges can be used with a wide range of conditions such as mild atmospheric conditions and sea water as well as in aggressive oxidizing and reducing media. The natural tendency of the alloy to withstand chloride-ion stress-corrosion cracking as well as pitting contributes to its applicability in strenuous offshore as well as chemical-process environments.

We provide Inconel 601 Pipe Flanges in all standard forms and designs and made to the specific dimensional needs of our clients, supplied with optional delivery on a global level along with extensive documentation including Mill Test Certificates, material test reports and third-party inspection.

Table of Contents

• Inconel 601 Flanges Specifications
• Chemical Composition of Inconel 601 / Alloy 601 Flanges
• Mechanical Properties of Inconel 601 Pipe Flanges
• Equivalent Grades – Inconel 601 Flanges International Designations
• Types of Inconel 601 Flanges
• Complete List of Inconel 601 Flange Designations
• Commonly Searched Inconel 601 Flange Variants
• Inconel 601 Flanges Applications – Industries & Use Cases
• Why Source Inconel 601 Flanges from Solitaire Overseas?
• Related Products
• Frequently Asked Questions – Inconel 601 Flanges

Inconel 601 Flanges Specifications

Complete dimensional, pressure, and manufacturing standard references for our ASTM B564 Inconel 601 Pipe Flanges.

Chemical Composition of Inconel 601 / Alloy 601 Flanges

The high nickel and chromium content of UNS N06601 underpins its outstanding oxidation and scaling resistance. The aluminium addition (1.0–1.7%) is the defining feature that gives Alloy 601 Flanges their superior oxidation and scaling resistance versus other nickel alloys. These composition limits govern the Alloy 601 Flanges we supply.

* Al (Aluminium) content 1.0–1.7% is the defining differentiator of Inconel 601 from Alloy 600. It forms a tightly adherent Al₂O₃ surface scale responsible for the alloy’s exceptional oxidation resistance at temperatures up to 1260 °C. Source: ASTM B564 / AMS 5715.

Mechanical Properties of Inconel 601 Pipe Flanges

Equivalent Grades – Inconel 601 Flanges International Designations

Types of Inconel 601 Flanges — WNRF, SORF, BLRF, RTJ, Socket Weld & More

We manufacture and supply the complete range of Alloy 601 / UNS N06601 Flanges to suit every piping connection requirement.

• Inconel 601 Weld Neck Flanges (WNRF): ASTM B564 UNS N06601 WNRF Flanges — ideal for high-pressure and high-temperature applications; the tapered hub transfers stress to the pipe wall.
• Alloy 601 Slip-On Flanges (SORF): ASTM B564 Inconel 601 SORF Flanges — cost-effective, easy to align; welded on both sides for strength. Available in Class 150# to 2500#.
• Inconel 601 Blind Flanges (BLRF): UNS N06601 BLRF Flanges — used to close off a pipe end or vessel opening; subjected to full line pressure and stress concentrations.
• Inconel 601 Socket Weld Flanges (SWRF): ASME SB564 Alloy 601 SWRF Flanges — used for small-bore, high-pressure piping; pipe slips into the socket and is fillet-welded.
• Inconel 601 Lap Joint Flanges: DIN 2.4851 Lap Joint Flanges — designed for use with stub ends; permit easy bolt-hole alignment and frequent dismantling.
• Inconel 601 Threaded / Screwed Flanges: ASTM B564 UNS N06601 Threaded Flanges — NPT, BSP, BSPT, MNPT thread forms; suitable where welding is not possible.
• Inconel 601 Ring Type Joint Flanges (RTJ): High-pressure RTJ Flanges in Inconel 601 — the grooved face accepts a metal ring gasket for superior sealing at extreme pressures.
• Inconel 601 Long Weld Neck Flanges: ASME SB564 LWN Flanges (Table-E, RFLWN) — provide a long neck acting as a nozzle, often used on pressure vessels and equipment.
• Inconel 601 Reducing Flanges: ASTM B564 Alloy 601 Reducing Flanges — connect pipes of two different nominal diameters without a separate reducer fitting.
• Inconel 601 Orifice Flanges: UNS N06601 Orifice Flange Pairs — used with orifice plates for differential-pressure flow measurement in high-temperature processes.
• Inconel 601 Spectacle Blind Flanges: ASTM B564 Spectacle Blinds (Spades & Ring Spacers) — for positive isolation or flow restoration without removing the flange assembly.

Complete List of Inconel 601 Flange Designations

Commonly Searched Inconel 601 Flange Variants

Buyers worldwide also source Inconel 601 Flanges under the following designations: Inconel 601 BLRF Flange, UNS N06601 WNRF Flange, Alloy 601 Raised Face Flange, ASTM B564 Inconel 601 SORF Flange, Inconel 601 Long Weld Neck Flange, Alloy 601 Forged Flange, Inconel 601 SWRF Flange, DIN 2.4851 RTJ Flange, Nickel Alloy 601 Threaded Flange, and Inconel 601 Orifice Flange. All are available in Class 150# to 2500# with full mill certifications from Solitaire Overseas.

Inconel 601 Flanges Applications — Industries & Use Cases

The superior oxidation resistance and mechanical strength at elevated temperatures make ASTM B564 Inconel 601 Flanges the first choice across critical industries worldwide.

• Furnace Equipment: Muffles, retorts, and furnace fixtures for annealing, carburizing, and heat-treating processes.
• Petrochemical & Refinery: Piping systems, vessels, and heat exchangers in oil & gas processing, hydrocarbon refining, catalytic cracking, and offshore platform applications.
• Chemical Processing: Chlorination equipment, reactors, and heat exchangers handling hot acids, alkaline solutions, and halogenated gases.
• Thermocouple Protection: Sheaths and protection tubes for temperature sensors in furnaces and high-temperature reactors.
• Gas Turbines & Jet Engines: High-temperature sections requiring thermal fatigue resistance and oxidation protection under cyclic loading.
• Flue Gas Scrubbers: Components in wet scrubbers and flue gas desulfurization (FGD) systems handling hot acidic gases.
• Power Generation: Boiler components, radiant tubes, and combustion zone parts exposed to hot flue gases and scaling.
• Pharmaceutical: High-purity process piping and equipment requiring corrosion resistance and cleanability.
• Marine & Offshore: Seawater handling systems and offshore platforms benefiting from resistance to pitting and crevice corrosion.

Why Source Inconel 601 Flanges from Solitaire Overseas?

With over 15 years of experience supplying nickel alloy flanges to global engineering projects, Solitaire Overseas is a trusted name for Inconel 601 Flanges in India and overseas. We go beyond supply — we deliver confidence, compliance, and consistency on every order.

🏭 Vertically Integrated Manufacturing

We own our production facility in Mumbai. Forging, CNC machining, surface finishing, and testing are all performed in-house, giving us full quality control from raw billet to finished Alloy 601 Flange.

📋 Certified Raw Material Traceability

All Inconel 601 raw material is sourced from approved mills and supplied with EN 10204 3.1 Mill Test Certificates. Full chemical and mechanical traceability is maintained for every heat number.

🔬 Rigorous Quality Testing

Every batch of UNS N06601 Flanges undergoes dimensional inspection, hardness testing, PMI (Positive Material Identification), hydrostatic testing, and visual / dye-penetrant examination before dispatch. All Inconel 601 Flanges are manufactured under our ISO 9001:2015 certified quality management system.

📦 Ready Stock & Fast Delivery

We maintain ready inventory of standard-size Inconel 601 Flanges in popular classes and types, enabling same-week dispatch for urgent requirements. Custom sizes are quoted with expedited lead times.

🌎 Proven Global Export Experience

With exports to 50+ countries including the USA, UAE, Saudi Arabia, UK, Germany, Australia, and Southeast Asia, Solitaire Overseas understands international packaging, documentation, and compliance requirements.

💰 Competitive Pricing & Custom Quoting

Flexible price terms (EXW, FOB, CIF), bulk discount structures, and transparent Inconel 601 flange price lists help you plan procurement budgets with confidence.

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We export Alloy 601 Flanges to 50+ countries with proper documentation, competitive freight terms, and on-time delivery. Contact us today!