In-House Forging
Open-die and closed-die forging up to 8 tonnes, with controlled heat treatment and full grain-flow orientation along the bore.
ISO 9001:2015Certified Quality
1/2" – 120"Size Range (DN15–DN3000)
Class 150–2500Pressure Ratings
40+ CountriesExport Network
Why SteelFlange
Built For Pressure. Delivered On Time.
Four decades of forging discipline behind every flange that leaves our works.
CNC Precision
42 CNC vertical turning centres holding ±0.25 mm on facing, ±0.5 mm on bolt-hole circles, and 125–250 Ra µin on sealing faces.
Tested & Traced
Every heat number carries UT, MPI, hardness and positive material identification records with EN 10204 3.1 / 3.2 certificates.
98.6% On Time
Stocked raw material bars and a dedicated project desk keep repeat orders moving inside 15 working days.
27+Years of Forging
About the Company
A Family-Run Forge With Global Reach
Since 1998 we have done one thing and done it properly — turn raw alloy steel into flanges that hold pressure for decades.
What began as a two-machine workshop in Mumbai's MIDC belt is today a 28,000 sq. ft. integrated facility supplying EPC contractors, refineries, shipyards and OEMs across the Middle East, South-East Asia, Europe and North America.
- ASME B16.5, B16.47 Series A & B, B16.36, MSS SP-44, EN 1092-1, DIN, BS 10, JIS & SABS 1123
- Carbon, stainless, duplex, super duplex, low-temperature and nickel alloy grades
- NABL-accredited third-party inspection welcome — TPI, SGS, BV, LR, DNV, TÜV
- Custom and non-standard flanges machined to customer drawings
Our Range
Flange Types We Manufacture
Standard and heavy-wall configurations, machined to your specification.
Most Requested
Weld Neck Flange
Long tapered hub transfers stress gradually into the pipe wall — the choice for high pressure, high temperature and cyclic service.
- Size 1/2" to 80" (DN15–DN2000)
- Class 150, 300, 600, 900, 1500, 2500
- Face RF, FF, RTJ
Economical
Slip On Flange
Slips over the pipe and is fillet welded inside and out. Lower cost, easy alignment, ideal for moderate pressure utilities.
- Size 1/2" to 60" (DN15–DN1500)
- Class 150, 300, 600, 900, 1500
- Face RF, FF
High Pressure
Blind Flange
Solid disc that blanks off a line, valve or vessel nozzle. The most heavily stressed flange type, especially in larger sizes.
- Size 1/2" to 80" (DN15–DN2000)
- Class 150 to 2500
- Face RF, FF, RTJ
Small Bore
Socket Weld Flange
Counter-bored socket gives a smooth bore transition and excellent fatigue strength on small-diameter high-pressure piping.
- Size 1/2" to 4" (DN15–DN100)
- Class 300, 600, 900, 1500, 2500
- Face RF, RTJ
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Years in Business
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Flanges Delivered
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Export Countries
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Skilled Workforce
Sectors We Serve
Trusted Across Heavy Industry
Oil & Gas
Upstream wellheads, midstream pipelines and downstream refinery units — NACE MR0175 compliant sour-service grades available.
Petrochemical
Duplex, super duplex and nickel alloys for corrosive process service in crackers, polymer and fertiliser plants.
Power Generation
High-temperature alloy steel flanges for boiler, steam and cooling-water circuits in thermal and combined-cycle stations.
Shipbuilding & Marine
Copper-nickel and stainless flanges with class society approval — LR, DNV, ABS, BV and RINA witnessed production.
Water & Effluent
Large-diameter plate and blind flanges for desalination, municipal pumping and industrial effluent treatment lines.
Renewables & Hydrogen
Emerging service grades for green hydrogen, bio-refinery and offshore wind substation pipework.
Approvals & Certifications
Quality You Can Audit
ISO 9001:2015
ISO 14001:2015
ISO 45001:2018
PED 2014/68/EU
ASME U & U2 Stamp
AD 2000-Merkblatt W0
NACE MR0175
CE Marking
Need A Quotation Within 24 Hours?
Send us your line list, datasheet or a drawing — our engineering desk will price it the same working day.