Stainless Steel & MS Flanges Supplier in Mumbai
Moltenium Power Steels is a leading supplier, stockist and dealer of SS flanges and MS flanges in Mumbai, stocking Class 150 to 2500 across Blind, Slip-On, Weld Neck, Threaded and RTJ types. ISO 9001:2015 certified, we supply fabricators and construction contractors across Mumbai and Maharashtra with precision-made flange connections. Our SS flange stock covers ASTM A182 F304, F316 and F321 grades, while our MS and carbon steel flanges are supplied to ASTM A105 and A516 specifications, alongside Duplex, Super Duplex and nickel alloy flanges for higher-corrosion applications. Sizes range from ½ inch to 48 inches, in Flat Face, Raised Face and Ring Type Joint options, with anti-rust, galvanised and custom coating finishes available. As a Mumbai-based supplier, stockist and dealer, we offer CNC machining and custom flanges on request, with same-city dispatch for standard sizes and grades held in stock.
What types of flanges do we supply in Mumbai?
Moltenium Power Steels is an ISO 9001:2015 certified, MSME-registered supplier and stockist of flanges in Mumbai, providing secure, precision-made pipe and valve connections across industrial and construction applications.
SSflanges
Stainless steel and forged flanges to ASTMA182F202,F304/304L/304H, F316/316L/316H/316TI, F310, F321 and F904L.
MS and carbon steel flanges
ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42–F70, and A516 Gr.60/65/70 — including spectacle blind flanges and spacer ring/spade flanges, plus Steel RST37.2 and C22.8.
Alloy and special alloy flanges.
Alloy steel to ASTM A182 F1, F5, F9, F11 and F22, plus Duplex, Super Duplex and nickel alloy flanges for higher-corrosion, higher temperature service.
Flange face types explained
Flat Face (FF) flanges have a smooth mating surface across the full face, typically paired with cast iron equipment or lower-pressure services. Raised Face (RF) flanges have a slightly raised sealing surface that con centrates gasket pressure for a more reliable seal — the most common choice for standard industrial piping. Ring Type Joint (RTJ) flanges use a metal ring gasket seated into a machined groove, providing the highest-integrity seal available for high pressure, high-temperature applications like refinery and offshore piping. Choosing the wrong face type for your gasket and equipment can cause leaks regardless of flange material quality, so confirming face type is as important as confirming grade.
Types stocked
Blind, SpectacleBlind, HighHubBlind, Orifice, Slip-On, SocketWeld, Weld Neck, Flat, Loose, Threaded, Lap Joint, Reducing Threaded, Square, Groove & Tongue, Spade, Forged, Raised Face and RTJ flanges, in sizes ½ inch (15 NB) to 48 inches (1200 NB), pressure classes 150 to 2500 (PN6 to PN64), to ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605 and AWWA standards.
Coating and finish options
Anti-rust paint, oil black paint, yellow transparent, zinc plating and hot/cold dip galvanising. CNC machining and customised flanges
are available on request for non-standard drawings
Secure, Durable, and Precision-Made Fasteners for Every Application
Flanges are a reliable way to connect pumps, pipes, valves, and other equipment in order to make a pipework system. Flanges add flexibility by allowing an easier disassembly and improved access to system components. A flange connection comprises pipe flanges, gaskets, and bolting.
At Moltenium Power Steels, we offer flanges in a wide range of materials and types to meet all your requirements based on the desired application.
Flanges Category Description
Size
½ inch (15 NB) to 48 inches (1200 NB)
Standards
ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, and Custom Drawings
Pressure Ratings
Class 150, 300, 400, 600, 900, 1500, 2500 | PN6, PN10, PN16, PN25, PN40, PN64, etc.
Carbon Steel Flanges / Forged Flanges
ASTM A105/A105N, A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, A694 F42–F70, A516 Gr.60/65/70 (Spectacle Blind Flange, Spacer Ring/Spade Flange), Steel RST37.2, C22.8
Stainless Steel Flanges / Forged Flanges
ASTM A182 F202, F304/304L/304H, F316/316L/316H/316TI, F310, F321, F904L
Alloy Steel Flanges / Forged Flanges
ASTM A182 F1, F5, F9, F11, F22, F91
Special Alloy Flanges / Forged Flanges
Duplex, Super Duplex, Nickel Alloys
Flange Face Type
Flat Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Coating / Surface Treatment
Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Value Added Services
CNC Machining, Customized Flanges
Carbon Steel / Stainless Steel Flanges Pressure
ANSI/ASME B16.5 Flanges: 150 lb, 300 lb, 400 lb, 600 lb, 900 lb, 1500 lb, 2500 lb
Types of Flanges
- Blind Flanges
- Spectacle Blinds
- High Hub Blinds
- Orifice Flanges
- Slip-on Flanges
- Socket Weld Flanges
- Weld Neck Flanges
- Flat Flanges
- Loose Flanges
- Threaded Flanges
- Lap Joint Flanges
- Reducing Threaded
- Weld Neck Flanges Series A or B
- Square Flanges
- Groove & Tongue Flanges
- Spade Flanges
- Forged Flanges
- Raised Face Flanges
- RTJ Flanges
- Pipe Flange Spacer Ring
Frequently Asked Questions
Class 150 to 2500 (PN6 to PN64), across Blind, Slip-On, Socket Weld, Weld Neck, Threaded, Lap Joint and RTJ types.
Raised Face (RF) flanges have a slightly raised sealing surface suited to standard gasket connections. Ring Type Joint (RTJ) flanges use a metal ring gasket seated in a machined groove, providing a higher-integrity seal for high-pressure, high-temperature service.
Yes — SS, MS, carbon steel, alloy steel, duplex and nickel alloy flanges are all held in stock at our Girgaon, Mumbai facility.
Slip-On flanges slide over the pipe end and are fillet welded top and bottom, making them easier to align but generally suited to lower-pressure applications. Weld Neck flanges are butt-welded directly to the pipe with a tapered hub, providing better stress distribution and a higher pressure rating for critical applications.
Yes — CNC machining and customised flanges are available on request for non-standard drawing specifications.
½ inch (15 NB) to 48 inches (1200 NB), to ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605 and AWWA standards.
Yes — Duplex and Super Duplex flanges are stocked alongside standard SS and MS grades for higher-corrosion offshore and marine applications.
Anti-rust paint, oil black paint, yellow transparent coating, zinc plating, and hot or cold dip galvanising are available.
A Blind flange completely seals a pipe end. A Spectacle Blind combines a blind disc and a ring in one hinged plate, allowing a line to be quickly switched between fully open and fully sealed. It is commonly used where a line needs periodic isolation for maintenance.
Face type (Flat Face, Raised Face, or RTJ) depends on your equipment’s mating flange and gasket type. Check your existing flange or piping specification, or share your application details with our team and we’ll confirm the correct match.
Standard sizes and grades held in stock at our Girgaon facility can typically be dispatched same-city within 1–2 days. Call ahead to confirm availability for urgent requirements.
