Inconel 625 Buttweld Fittings

ASTM B366 / ASME SB366 Inconel 625 Buttweld Fittings | UNS N06625 / WNR 2.4856 | Manufacturer and Exporter India

Inconel 625 Buttweld Fittings Suppliers, Manufacturer and Exporter in India

Inconel 625 Elbows Buttweld / Seamless Buttweld Manufacturer, Supplier and Exporter in India

Kalpataru Piping Solutions is a certified Inconel 625 pipe fitting manufacturer and exporter in India, supplying ASTM B366 / ASME SB366 buttweld fittings in UNS N06625 / WNR 2.4856 material. Our Inconel 625 buttweld fittings, also known as alloy 625 fittings and nickel alloy 625 buttweld fittings in global procurement, are available in seamless form from 1/2 inch to 10 inch NB and in welded or fabricated form up to 48 inch NB, to ASME B16.9, ASME B16.28, and MSS-SP-43 dimensional standards.

All products in the range are Inconel 625 elbows (Long Radius and Short Radius), equal and reducing tees, concentric and eccentric reducers, end caps, stub ends, and bends in the pipes. Fittings are all made in accordance with NACE MR0175 and NACE MR0103 where necessary as specified in the project. It has been exporting to 40 or more countries since 1995 and all deliveries have been accompanied with EN 10204 3.1 MTC by NABL-approved laboratories.

Kalpataru Piping Solutions is a certified  Inconel 625 pipe fitting manufacturer in India, that supplies buttweld fittings to ASTM B366 to be used in offshore, chemical processing, aerospace and nuclear applications. We have quality assurance whereby our third party inspection is done by TUV, SGS, Bureau Veritas, and Lloyds Register upon request.

Inconel 625 Buttweld Fittings Specifications

Note: ASTM B366 / ASME SB366 is the primary standard for nickel alloy pipe fittings. ASTM B564 / ASME SB564 is the forgings standard for the raw material used in manufacturing. ASME B16.11 covers forged socket-weld and threaded fittings and does NOT apply to buttweld fittings listed on this page.

Inconel 625 Buttweld Fittings Chemical Composition (ASTM B366 / UNS N06625)

The table below shows the complete 11-element chemical composition for Inconel 625 (UNS N06625) per ASTM B366. Molybdenum (Mo) at 8.0 to 10.0% and Niobium plus Tantalum (Nb+Ta) at 3.15 to 4.15% are the defining alloying elements that give Inconel 625 its superior resistance to pitting, crevice corrosion, and intergranular attack in chloride-bearing and oxidising environments. 

Inconel 625 Buttweld Fittings Mechanical Properties

Inconel 625 Equivalent Grades across International Standards

Types of Inconel 625 Buttweld Fittings

All alloy 625 fittings listed below are manufactured in UNS N06625 material to ASTM B366 and ASME B16.9 dimensional tolerances. The full range of nickel alloy 625 buttweld fittings covers 27 product types from standard elbows and tees through specialised olet fittings for branch connections. 

Inconel 625 Elbows: Long Radius, Short Radius and 3D Elbow Supplier

Inconel 625 elbows come in Long Radius (1.5D), Short Radius (1.0D) and 3/5D (3 or 5 degrees sweep) versions. All Inconel 625 elbow buttweld fittings are available in seamless form (1/2 inch to 10 inch NB) and welded form (up to 48 inch NB) and are produced to ASME B16.9.

The most widely-used type of elbow in offshore piping systems and chemical plant headers is the Long Radius 90 degree elbow, Inconel 625. The short Radius elbows are indicated where there is space limitation in equipment nozzle connection. Slurry and high-velocity applications that require pressure drop to be minimised are found in 3D and 5D elbows.

Inconel 625 all elbows are provided with EN 10204 3.1 MTC that certifies compliance with ASTM B366 UNS N06625. As standard, dimensional inspection to ASME B16.9 wall thickness and centre-to-face tolerances. Against RFQ, custom degree elbows, 15 degree to 180 degrees are offered.

Available Elbow Types:

• 90 Degree Long Radius Elbow (1.5D) to ASME B16.9
• 45 Degree Long Radius Elbow (1.5D) to ASME B16.9
• 90 Degree Short Radius Elbow (1.0D) to ASME B16.28
• 180 Degree Long Radius Return Bend to ASME B16.9
• 3D Elbow and 5D Elbow for Low-Pressure-Drop Applications
• Custom Degree Elbows (15 degree, 30 degree, 60 degree, and others) against RFQ

Inconel 625 Tees and Reducers — Equal Tee, Reducing Tee, Concentric and Eccentric Reducer

Inconel 625 equal tees and reducing tees are available in 1/2 inch to 24 inch NB to ASME B16.9. These alloy 625 fittings are employed at the points of connection between branches in offshore manifolds, in the process headers of a chemical plant and in undersea piping systems. By reducing tees a branch connection at a lower diameter than the run pipe can be made without a separate reducing fitting.

Nickel alloy 625 buttweld fittings come with concentric and eccentric reducers in seamless form (up to 10 inch NB) and fabricated form (up to 48 inch NB). Eccentric reducer is normally detailed at pump suction nozzles to avoid air pockets. In straight pipe changes in the vertical run, concentric reducers are employed.

Available Tee and Reducer Types:

• Equal Tee – all three outlets at full pipe bore
• Reducing Tee – branch outlet at reduced bore
• Lateral Tee – branch at 45 degree to run pipe
• Concentric Reducer – symmetric bore reduction
• Eccentric Reducer – flat bottom for pump suction nozzles

Applications of Inconel 625 Buttweld Fittings

Inconel 625 buttweld fittings are specified in offshore oil and gas piping systems, chemical processing plant headers, flue gas desulfurization ductwork, aerospace exhaust manifolds, marine propulsion and seawater handling systems, and nuclear reactor coolant circuits. These alloy 625 fittings are selected wherever chloride pitting resistance, crevice corrosion resistance, and high-temperature oxidation resistance are required simultaneously.

Industry Applications:

• Offshore Oil and Gas: Subsea flowlines, topside manifolds, FPSO piping, riser assemblies
• Chemical Processing: Phosphoric acid plant headers, nitric acid piping, pickling plant circuits
• Aerospace: Exhaust manifolds, thrust reverser ducting, afterburner components
• Flue Gas Desulfurization (FGD): Absorber inlet headers, scrubber ductwork, bypass ducting
• Marine: Seawater cooling circuits, desalination plant pipework, propulsion systems
• Nuclear: Reactor coolant circuits, waste processing pipelines, heat exchanger headers
• Pharmaceutical: High-purity process piping where contamination from iron is not acceptable

Inconel 625 Buttweld Fittings Size Chart — NPS, OD and Wall Thickness

The table below covers standard NPS sizes from 1/2 inch to 48 inch NB with approximate OD dimensions and available schedule ranges for the most commonly ordered Inconel 625 buttweld fitting sizes. All dimensions are per ASME B16.9 (seamless and welded), ASME B16.28 (short-radius elbows), and MSS-SP-43 (fabricated fittings above 24 inch NB). 

Inconel 625 Buttweld Fittings Price in India — April 2026

The prices below are indicative LME-linked reference prices for Inconel 625 buttweld fittings ex-Mumbai warehouse in April 2026. Actual prices depend on size, schedule, quantity, delivery terms, and current nickel LME rate. Please submit an RFQ for a firm quotation valid for 7 to 14 business days.

All prices are indicative and subject to change with LME nickel rates. Prices exclude GST and freight. Submit RFQ at kalpatarupiping.com for a firm quotation. Bulk discounts available for orders above 500 kg.

Related Sections

• Inconel 600 Instrumentation Valves
• Inconel 600 Filler Wire
• Inconel 600 Long Radius Bends
• Inconel 600 Pipes Spools
• Inconel 600 Wiremesh
• Inconel 625 Instrumentation Valves
• Inconel 625 Filler Wire
• Inconel 625 Long Radius Bends
• Inconel 625 Pipes Spools
• Inconel 625 Wiremesh

Inconel 625 Forged Fittings Exporter | Countries and Cities We Supply To

Kalpataru Piping Solutions exports Inconel 625 forged fittings and nickel alloy 625 forgings to over 40 countries worldwide. Our major export destinations include: United States (Houston, Los Angeles, New York), United Kingdom (London, Aberdeen), UAE (Dubai, Abu Dhabi, Sharjah), Saudi Arabia (Dammam, Riyadh, Jubail), Canada (Calgary, Edmonton), Australia (Perth, Brisbane), Germany (Hamburg, Dusseldorf), Netherlands (Rotterdam, Amsterdam), Singapore, Malaysia (Kuala Lumpur), South Korea (Busan, Seoul), Brazil (Rio de Janeiro, Sao Paulo), South Africa (Johannesburg, Durban), Italy (Genoa, Milan), France (Paris, Marseille), Norway (Stavanger, Bergen), and all GCC and Southeast Asian markets.

Related Inconel 625 Products

Explore our full range of Inconel 625 products:

• Inconel 625 Flanges (ASTM B564, Slip On, Weld Neck, Blind, Socket Weld Flanges in UNS N06625)
• Inconel 625 Buttweld Fittings (ASTM B366, Seamless and Welded Elbows, Tees, Reducers)
• Inconel 625 Pipes and Tubes (ASTM B444, Seamless and Welded Pipes and Tubes)
• Inconel 625 Round Bars (ASTM B446, Hot Rolled and Cold Drawn Bars)
• Inconel 625 Fasteners (ASTM B446, Bolts, Nuts, Studs, Washers in UNS N06625)
• Inconel 625 Compression Tube Fittings (Inconel 625 tube fitting supplier for instrumentation and high pressure lines)