We are Riddhi Siddhi Impex, an ISO 9001, ISO 14001, and ISO 45001-certified Monel shims manufacturer and supplier operating from Mumbai since 2002. Every shim is precision-slit on our lines from nickel-copper alloy coil certified to ASTM B127 / ASME SB-127, with AMS 4544. We process any width between 3 mm and 2000 mm to order. A monthly supply capacity of 400 to 500 tonnes and dispatch within 4 to 5 days keeps maintenance shutdowns and project schedules on track.
Monel shims are thin nickel-copper spacers that set the gap between mating parts. Millwrights pack them under pump feet, between flange faces, and behind bearing housings wherever alignment depends on fractions of a millimetre. The alloy matters because a shim spends its working life clamped inside joints where moisture collects. Stainless spacers pit in chloride-laden or reducing conditions, lose thickness, and let the setting drift. A nickel-copper shim resists those same environments, so the joint doesn't drift from the dimension it was packed to. Buyers also order the product as Monel packing shims, spacer shims, or alignment shims; the stock is identical.
All of our Monel shim stock is slit in-house. Thickness runs from 0.03 mm to 5 mm, and widths between 3 mm and 2000 mm hold ±0.1 mm. Slit, deburred, and round edge conditions come off the same lines. Coils wind on 150 mm to 610 mm inner diameters, with outer diameters up to 1800 mm. Each batch traces to its mill heat through the accompanying documentation, and technical data sheets are available on request. Most orders ship from ready stock at our Taloja and Mumbai warehouses.
We supply Monel 400 shims in soft-annealed coil, providing corrosion-resistant, dimensionally stable spacing for demanding marine and chemical applications.
Most of the Monel shims dispatched from our warehouses serve 3 sectors: marine and offshore, chemical processing, and oil and gas. Monel 400 covers all three; only the thickness, finish, and documentation change with the joint.
Shipyards and offshore contractors pack Monel 400 shims around seawater pump bodies, valve mounts, and piping supports. Splash-zone joints hold their alignment because the alloy resists brine that would thin a stainless spacer within a few seasons.
Acid plants set Monel 400 shims at flange joints and heat exchanger frames handling hydrofluoric and sulphuric streams. Reducing acids attack stainless packing, so the nickel-copper spacer keeps clearances stable between turnarounds.
Wellhead hardware, valve trim mounts, and instrument seats in sour, chloride-bearing service all use Monel 400 shim stock. A width slit to ±0.1 mm drops into the gap without on-site trimming, which saves fitting time during workovers.
Paperwork travels with every consignment. Riddhi Siddhi Impex pairs three ISO certifications with heat-level traceability on each Monel shim order.
An EN 10204 Type 3.1 mill test certificate accompanies each dispatch, recording chemistry and mechanical results against the source heat. Type 3.2 certification is available on request.
Our quality management system is certified to ISO 9001:2015, covering material intake, slitting, and final inspection.
ISO 14001:2015 governs our environmental controls across storage, processing, and movement of material at both warehouses.
Occupational health and safety runs under ISO 45001:2018 throughout our slitting and warehouse operations.
Monel is a nickel alloy, so flat-rolled shim stock falls under HS heading 7506, which covers nickel plates, sheets, strip, and foil. Nickel alloy material is generally classified under subheading 7506.20. Confirm the final code with your customs broker.
Yes, Monel shim stock stays on our shelves year-round. Standard dispatch takes 4 to 5 days, and urgent orders leave within 2 to 3 days.
Yes. Our lines slit Monel shim stock from 0.03 mm to 5 mm thick and to any width between 3 mm and 2000 mm, holding ±0.1 mm on width.
Riddhi Siddhi Impex manufactures and supplies Monel shims from Mumbai, and we've done so since 2002, serving buyers across India and overseas. Call or WhatsApp our team, and a quote will reach you within 24 hours.
