ASME B16.5, B16.47 & EN 1092-1 forged flanges manufactured in Mumbai. Stocking Carbon Steel (A105), Stainless Steel (304/316/321), Duplex 2205, Super Duplex, Alloy Steel & Nickel Alloys. Complete EN 10204 3.1 MTC & 3rd-party inspection.
Select a forged flange type below for full technical specifications, dimension tables, and ordering guides.
High-pressure forged flange with a tapered hub for severe service, thermal cycling, and high-vibration piping.
Cost-effective flange slipped over the pipe and welded inside and out. Ideal for low/medium pressure systems.
Solid forged disc used to seal pipeline ends, vessel nozzles, and perform pressure testing isolation.
Bored flange with a socket recess for smooth-bore internal fluid flow in small-diameter high-pressure piping.
Weld-free installation with internal NPT/BSPT threads. Perfect for explosive or non-weldable utility systems.
Loose backing flange paired with a stub end for easy bolt-hole alignment and frequent line dismantling.
Figure-8 positive line isolation device (solid plate + open spacer ring) for quick cycling between open and blind state.
Extended neck forged flange used primarily as heavy-barrel vessel nozzles and high-stress column connections.
Engineered solutions by application, material grade, location, and service condition:
| Material Category | Grades / Specifications |
|---|---|
| Stainless Steel Forged Flanges | ASTM/ASME A/SA182: F304, F304L, F316, F316L, F316H, F316Ti, F321, F347; Cast: CF3, CF3M, CF8, CF8M; DIN: 1.4301, 1.4306, 1.4401, 1.4404, 1.4408, 1.4409 |
| Duplex Steel Forged Flanges | UNS S31803/S32205 — ASTM A182 Gr F51, F52, F53, F54, F55, F57, F59, F60, F61 |
| Super Duplex Forged Flanges | UNS S32750/S32760 — ASTM A182 Gr F53, F55; Zeron 100 |
| Carbon Steel Forged Flanges | ASTM/ASME A/SA105, A105N, A216-WCB; A350 LF2 (low temp); A694 F52/F56/F60/F65/F70/F80 (high yield); DIN 1.0460, 1.0402, 1.0619 |
| Alloy Steel Forged Flanges | ASTM A182/ASME SA182: F5, F9, F11, F12, F22, F91 (all P-grades for high temp service) |
| Nickel Alloy Forged Flanges | Inconel 600, 601, 625, 718, 690, X750 (ASTM B564/ASME SB564); Incoloy 800, 800H, 800HT, 825, 925 |
| Hastelloy Forged Flanges | C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X (ASTM B564) |
| Monel Forged Flanges | Monel 400 (UNS N04400), Monel K500 (UNS N05500) — ASTM B564 |
| Pure Nickel Forged Flanges | Nickel 200, 201, 205, 205LC — ASTM B564/ASME SB564 |
| Copper Nickel Forged Flanges | CuNi 90/10 (C70600), CuNi 70/30 (C71500), UNS C71640 — ASTM/ASME SB 61/62/151/152 |
| Titanium Forged Flanges | Gr.1, Gr.2, Gr.4, Gr.5, Gr.7 — ASTM B381/ASME SB381; R50250/R50400/R50550/R50700/R52400/R53400/R56400 |
| Aluminium Forged Flanges | 5052, 6061, 6063, 2017, 7075 |
| Brass Forged Flanges | 3602, 2604, H59, H62 |
| Special Alloy Forged Flanges | Alloy 20 (ASTM B462 SB462 — Carpenter 20Cb-3); SMO 254/6Mo (UNS S31254, DIN 1.4547); Al6XN; AISI 4130; AISI 4140; Nimonic 75/80A/90; Gunmetal; Cast Iron |
| Standard / Spec | Scope / Application Details |
|---|---|
| 🇺🇸ANSI/ASME B16.5 | NPS ½" to 24" — the primary standard for most flanges |
| 🇺🇸ASME B16.47 Series A (MSS SP-44) | NPS 26" to 60" — large diameter |
| 🇺🇸ASME B16.47 Series B (API 605) | NPS 26" to 60" — large diameter (lighter) |
| 🇺🇸ASME B16.36 | Orifice flanges |
| 🇺🇸ASME B16.48 | Line blinds & spectacle blinds |
| 🇪🇺DIN 2501 / EN 1092-1 | European metric standard — PN ratings |
| 🇯🇵JIS B2220 | Japanese Industrial Standard |
| 🇬🇧BS 4504 / BS 10 Table D/E/F/H | British Standard |
| 🇺🇸MSS SP-44 | Large diameter steel pipeline flanges |
| 🇺🇸API 6A | Wellhead and Christmas tree equipment |
| 🇺🇸API 605 | Large diameter carbon steel flanges |
| 🇺🇸AWWA C207 | Water works flanges |
| 🇷🇺GOST 12820 / 12821 | Russian/CIS standard |
| 🇦🇺AS 2129 / AS 4087 / AS/NZS 4331.1 | Australian standard |
| 🇰🇷KS B1503 | Korean standard |
| 🌐ISO 7005-1 / ISO 9624 | International standard |
| 🇺🇸SAE J518 | Hydraulic flanged tube fittings |
| 🇨🇳GB Standard | Chinese national standard |
Most common. A raised circular ring that concentrates pressure on a smaller area to compress the gasket. Height: 1/16" for Class 150/300; 1/4" for Class 400 and above.
No raised portion; entire flange face is in the same plane. Used when mating against cast iron or non-metallic flanges to avoid cracking on bolt tightening.
Oval or octagonal groove machined into the face; a metal ring gasket seats in the groove. Used in high-pressure, high-temperature critical service (refineries, oil fields).
One flange has a raised ring (tongue); the other a matching groove. Provides excellent alignment and a confined gasket. Used in pumps and valve bonnets.
Similar to T&G but the female face is flat and the male face raised. Used in heat exchangers, pressure vessels, and high-integrity process joints.
Same operating principle as the standard Male & Female flange, scaled up with larger step contact surfaces for specialized heavy industrial equipment.
Each flange pressure tested at 1.5x working pressure per ASME code requirements.
Non-destructive testing to detect internal sub-surface cracks, inclusions and forging defects.
100% radiography available; mandatory for critical Class 900+ high pressure services.
Spectrometer validation to verify alloy chemistry precisely matches the Mill Test Certificate.
Detects micro surface cracking and porosity on critical machined seating surfaces.
For ferromagnetic alloys; flags surface and near-surface structural discontinuities.
Verifies correct heat treatment structure and ensures mechanical properties are hit.
In-house lab chemical checks of billets before forging process begins.
Crucial for low-temperature applications to verify ductility (e.g. A350 LF2, LTCS).
Verifies sour-gas / H2S environment service capability (NACE MR0175 / MR0103).
Provided as per EN 10204 3.1 detailing chemical & mechanical analysis.
Independent third-party inspection validation (available upon request).
Certified suitability for sour gas/H2S environments.
Provides 100% trace origin tracking from steel billet to finished flange.
All critical tolerances checked and certified against CAD designs.
HTR and PWHT thermal chart records included where requested.
Pressure log documentation verifying weld integrity.
Bureau Veritas, SGS, Lloyds, DNV, TUV inspection options.
Proper documentation for simple custom clearance and cargo log.
Enables import tariff relief and compliance logging.
Upstream extraction, midstream pipelines, downstream refineries.
Chemical reactors, process lines, heat exchangers.
Boilers, steam turbines, nuclear plants, thermal power.
Hygienic piping, clean steam, pure water systems.
Sanitary flanges, sugar mills, beverage processing.
Chemical recovery, bleaching lines.
Municipal water, desalination, irrigation.
Offshore platforms, FPSOs, marine piping.
Acid service, caustic lines, solvent handling.
HVAC, fire suppression, utility headers.
Remax Forge & Fittings stands out as a leading flange manufacturer due to our complete in-house forging, heat treatment, and precision CNC machining capabilities based in Mumbai. We provide certified compliance, factory-direct wholesale pricing, and custom forging schedules tailored to your engineering blueprints. With over 20 years of manufacturing experience, zero-defect quality management, and short lead times, we are a trusted supply partner for critical industrial piping projects.
Fully audited quality management workflows.
Forging, heat-treat, machining in Mumbai.
PMI, Spectro, UT, Hydro labs on-site.
EN 10204 3.1 standard; 3.2 available.
Serving critical gas/oil clients globally.
Proven global logistics and documentation.
Special shapes, alloys and schedules.
Competitive pricing with no agent markup.
Engineers ready to assist spec selection.
Fast turnaround of custom and stock orders.
Ordering high-quality forged flanges from Remax is straightforward. To ensure our engineering team provides you with a precise and competitive quote, please specify the exact flange type, nominal pipe size (NPS), pressure class rating, material grade, and facing configuration. Let us know your total quantity requirements and if you require any specialized testing or custom coatings. Contact us via email or phone for a quick, same-day response.
Let our experts take over from here!