We are Riddhi Siddhi Impex, an ISO 9001, ISO 14001, and ISO 45001-certified Mumbai-based Inconel Coils supplier and stockist established in 2002. We stock Inconel 600, 602, 625, 718, 825, 800, and 840 coils to ASTM, ASME, and AMS standards. A monthly supply capacity of 400 to 500 tonnes and dispatch within 4 to 5 days keeps aerospace, chemical, and furnace projects on schedule instead of waiting on mill rolling slots.
Inconel coils are flat-rolled nickel-chromium superalloys in a wound, ready-to-feed form. This alloy proves its value in environments where high temperatures and corrosive conditions occur at the same time. Chromium builds a protective oxide film that renews itself at furnace temperatures, while the nickel matrix holds strength and resists chloride stress-corrosion cracking long after stainless steel has failed. Fabricators press, blank, and roll-form directly off the coil, and each part nests along a single rolled length, a real saving at nickel superalloy prices. Strip for bellows, honeycomb seals, heat shields, and exchanger components all start life this way.
Our warehouses in Mumbai and Taloja carry both rolling routes. Mill documentation arrives with every source coil upon request and follows the material through slitting, so heat traceability holds from melt to finished width. Orders draw either a complete source coil or slit widths from the same racks.
Our racks hold 7 Inconel coil grades in ready stock. Service temperature, corrosive medium, and strength requirement decide which one suits your project.
Inconel 600 (UNS N06600) is the standard nickel-chromium-iron grade, resisting oxidation and chloride stress-corrosion cracking across heat and chemical duties alike.
View gradeFurnace builders reach for Inconel 602 (UNS N06025), a high-carbon nickel-chromium-iron grade whose aluminium addition grows an alumina scale for extreme oxidation resistance.
View gradeNiobium and molybdenum give Inconel 625 (UNS N06625) a rare pairing of corrosion resistance and high strength straight from the anneal, with no age-hardening step needed.
View gradeAerospace demand drives Inconel 718 (UNS N07718), a precipitation-hardenable grade that reaches very high strength through solution treatment and ageing rather than cold work.
View gradeIncoloy 825 (UNS N08825) couples nickel, iron, and chromium with molybdenum and copper, handling sulphuric, phosphoric, and mixed acids where stainless steels pit or crevice corrode.
View gradeIncoloy 800 (UNS N08800) holds strength and ductility in prolonged 600-800°C service, resisting carburisation and oxidation in reformer tubes, heat-treat baskets, and petrochemical furnace components.
View gradeIncoloy 840 (UNS S33400) suits general furnace and heater service, offering stable oxidation resistance, moderate strength, and good fabricability for muffles, radiant tubes, and support fixtures.
View grade3 sectors account for most of the Inconel coils we dispatch. Grade selection follows the temperature and the medium that each industry throws at the metal.
Engine builders blank combustor parts, honeycomb seal strip, and heat shields from Inconel 718 Coils, forming the alloy in its soft state before ageing brings the strength up. Inconel 625 Coils appear in exhaust and ducting components where welds must match parent-metal corrosion performance. Thin precision gauges with tight width tolerance matter most here.
Process plants form Inconel 625 Coils into reactor linings, column internals, and heat exchanger strips for chloride-bearing and mixed-acid streams. Where hot caustic soda dominates the duty, Inconel 600 Coils take over, since its high nickel content resists the caustic stress-corrosion cracking that attacks stainless steel. Slit widths feed gasket and seal production for the same plants.
Furnace fabricators roll Inconel 602 Coils into muffles, radiant tubes, and carrier fixtures that face cyclic oxidation, carburising atmospheres, and metal dusting. Inconel 600 Coils cover retorts and baskets running at lower furnace temperatures. Repeat thermal cycling that cracks the scale on lesser alloys leaves these grades serviceable through extended campaigns.
Every dispatch leaves with its paperwork. Riddhi Siddhi Impex holds three ISO certifications, and mill-level traceability is under them.
Each coil ships with an EN 10204 Type 3.1 mill test certificate traced back to the originating mill heat. Type 3.2 certification is arranged on request.
ISO 9001:2015 certifies the quality management system behind our sourcing, stocking, and slitting operations.
Environmental management runs under ISO 14001:2015, covering coil storage, handling, and movement through dispatch.
ISO 45001:2018 governs occupational health and safety across the warehouse floor and the slitting lines.
Inconel is a nickel alloy, so flat-rolled coils fall under HS heading 7506, which covers nickel plate, sheet, strip, and foil, with alloyed nickel under subheading 7506.20. Have your customs broker verify the exact subheading before export.
Yes, Inconel Coils stay in our Mumbai stock throughout the year. Regular dispatch runs 4 to 5 days, while urgent orders leave in 2 to 3 days.
Yes. Our lines slit any width from 3 mm to 2000 mm and hold the finished edge to ±0.1 mm. Coil inner diameters run from 150 mm to 610 mm, and outer diameters go up to 1800 mm.
Riddhi Siddhi Impex has stocked Inconel coil in Mumbai since 2002, supplying customers across India and overseas markets. Call or WhatsApp our team, and get your quote within 24 hours.
