SS, Duplex & Nickel Alloy Round Bar Supplier in Mumbai
Moltenium Power Steels is a trusted supplier, stockist and dealer of duplex rods, duplex round bars, SS round bars, and SS bright bars in bigger diameters in Mumbai. We stock SS 200, 300 and 400 series bright round bars along with nickel alloy round bars, serving machine shops and fabricators across Mumbai with same-city delivery. Our bar stock ranges from 10mm to 800mm diameter, covering Export Bright, Cold Drawn, Centreless Ground and Forged finishes, so machine shops, valve manufacturers and fastener producers can source every grade — from standard 304/316 stainless through to duplex, super duplex and nickel alloys like Inconel, Monel and Hastelloy — from a single Mumbai stockist. As a supplier and dealer backed by decades of metal trading experience, we provide mill-certified round bar with same-day quotations for standard diameters, helping Mumbai-based fabricators keep production schedules on track without waiting on out-of-state suppliers.
SS & Duplex Round Bar Supplier in Mumbai
What types of bar do we supply in Mumbai?
Moltenium Power Steels is an ISO 9001:2015 certified, MSME-registered supplier and stockist of round bar, square bar, hex bar and TMT bar in Mumbai. Backed by Nageshwar Steels, trading ferrous and non-ferrous metals since the 1990s, we hold bar stock from 10mm to 800mm diameter for machine shops, fastener manufacturers and process equipment fabricators across the city.
SS 200, 300 and 400 series round bars
Austenitic (200/300 series) stock covers 201, 202, J3, 303, 304, 304L, 304LN, 304H, 309, 310, 316, 316L, 316LN, 316H, 316TI, 317, 317L, 321, 321H, 347, 347H, 904 and 904L. For 400 series, we stock precipitation-hardening grade 17-4PH, used in valve components, pump shafts and high-strength fasteners where higher mechanical strength than standard austenitic
grades is required.
SS bright bars in bigger diameters.
We supply Export Bright,Peeled/Turned, Cold Drawn, Centreless Ground & Polished, Black and Forged finishes, including bright bar in larger diameters for clients machining pump shafts, valve stems and structural fasteners who need tighter tolerance and superior surface finish straight off the bar—reducing machining time and material waste compared to black or hot-rolled stock.
Duplex and Super Duplex round bars
For applications demanding higher yield strength and chloride stress-corrosion resistance — common in Mumbai’s marine, desalination and offshore fabrication sector — we stock Duplex and Super Duplex bar to SA240 UNS S31803, S32205, S32550, S32750, S32760 and SMO 254.
Nickel alloy round bars
Incoloy, Inconel, Monel and Hastelloy bar for high temperature and severely corrosive service; Alloy 20 for sulphuric acid environments
where even duplex grades would corrode too quickly.
Round vs square vs hex — choosing the right profile
Round bar is the most common choice for machined components, shafts and fasteners where the part is turned on a lathe. Square bar suits fabrication work where flat faces simplify welding and bolting. Hex bar is specified almost exclusively for fasteners (bolts, nuts) since its
flat faces are needed for wrench engagement without further machining — choosing hex stock over round for hex-head fasteners saves significant machining time.
Diameters, finishes, lengths and tolerances
10mm to 800mm diameter, standard lengths of 3 metres and 6 metres (size-dependent), H7–H10 tolerance available depending on finish and grade.
Applications
Machined components, pump shafts, valves, fasteners, studs and bolts, machine tools, dairy equipment, and surgical/medical parts.
How we quality-check bar stock
Every batch is verified against mill certification for grade and dimensional tolerance on arrival, with surface and straightness checks before it’s released for sale
Stockists and Dealers of Round Bar, Hex Bar, Square Bar and TMT Bars
Steel bars are cylindrical/ hexagonal/ square shaped objects which are used as structural components in many industrial and commercial applications.
These bars come in a wide range of grades to suit specific applications, including 201, 202, J3, 303, 304, 304L, 304LN, 304H, 309, 310, 316, 316L, 316LN, 316H, 316TI, 317, 317L, 317LN, 321, 321H, 347, 347H, 904, 904L, duplex & super duplex SA240 UNS NO. S31803, S32205, S32550, S32750, S32760, SMO 254, 17-4PH, Alloy 20, mild steel, and more. Length options typically include 3 meters and 6 meters, although this can vary depending on the size and requirements of the project. Surface finishes like Export Bright, Peeled / Turned Bar, Cold Drawn Bar, Centreless Ground & Polished Bar, Black Bar, and Forged Bar are available, catering to specific aesthetic and functional preferences.
We aim to provide you with the best quality product which matches your requirement at the best rate possible. Our team is well trained to answer all your questions and provide you with a quotation.
Frequently Asked Questions
10mm to 800mm, in Export Bright, Cold Drawn, Centreless Ground & Polished, Black and Forged finishes, sourced against H7–H10 tolerance.
300 series, such as 304 and 316, is austenitic and generally non-magnetic, chosen for corrosion resistance and weldability. 400 series, such as 17-4PH, is precipitation-hardening and chosen for higher mechanical strength, commonly used in pump shafts and high-strength fasteners.
Yes — Duplex and Super Duplex bar to SA240 UNS S31803, S32205, S32550, S32750, S32760 and SMO 254 are available, commonly used in marine and offshore fabrication.
3-metre and 6-metre standard lengths are available depending on diameter and grade. Non-standard lengths are available on request.
Bright bar is cold drawn, peeled, or centreless ground and polished to a smooth, tight-tolerance finish, ready for machining with minimal stock removal. Black bar is hot-rolled and retains mill scale, typically used where surface finish and tight tolerance aren’t critical, such as general fabrication.
Hex bar is used almost exclusively for fastener production, such as bolts and nuts, because its flat faces provide wrench engagement without additional machining. This saves time compared to machining flats onto round stock.
Yes — Incoloy, Inconel, Monel, Hastelloy and Alloy 20 round bars are stocked for high-temperature and severely corrosive service applications.
H7 to H10 tolerance is available depending on grade, diameter and finish. Confirm your exact tolerance requirement when ordering.
Yes — we regularly supply bar stock to fastener manufacturers. Contact us with your grade, diameter and quantity for a bulk quote.
Standard stock diameters and grades are typically available for same-city dispatch within 1–2 days. Larger or non-standard diameters may require checking mill availability first.
Machine shops, fastener manufacturers, valve and pump component fabricators, dairy and food equipment builders, and marine/offshore fabrication contractors.
