M/F Face Flanges Suppliers
ASME B16.5 Male & Female Flanges: Dimensions | Specifications | Material Grade | Standards | About M/F Face Flange | All Product Types
Nutech Overseas is a leading manufacturer and exporter of precision-engineered Male & Female Flanges, designed to ensure secure sealing and alignment in high-pressure and high-temperature pipeline systems. These flanges feature a raised male face and a matching recessed female face, providing a natural centering mechanism that ensures tight fitment and enhanced leak protection without requiring excessive bolt load.
We offer both small and large Male Female Flanges, tailored to suit various pipeline diameters and pressure classes, from Class 150 to Class 2500 (PN6 to PN400). Our M/F face flanges are widely used in process piping, pressure vessels, water treatment plants, petrochemical refineries, and offshore installations — particularly where thermal expansion and vibration resistance are critical.
In addition to standard weld neck and slip-on configurations, we also manufacture Male and Female Threaded Flanges, suitable for low-pressure and non-welded connections. All our flanges are forged as per international norms including ASME B16.5, ASME B16.47 Series A/B, EN 1092-1, and MSS-SP-44, ensuring dimensional accuracy, mechanical strength, and corrosion resistance.
Available in carbon steel, stainless steel, duplex, super duplex, and high-nickel alloys, our MF flanges undergo advanced forging, machining, and testing processes to meet the highest quality expectations. Each flange is tested for flatness, face finish, and alignment to ensure it is compatible with gaskets such as ring-type joints, spiral wound, and flat sheet types.
With a strong export presence across the USA, UAE, Saudi Arabia, Europe, and Southeast Asia, Nutech Overseas is trusted globally for providing high-performance forged Male & Female Flanges with timely delivery and full traceability.
For complete technical details, including dimensions, pressure rating classes, weight charts, sizes, tolerances, and material specifications of our ANSI B16.5 Male & Female Threaded Flanges, please download the full Catalog PDF below.
Specification | Details |
---|---|
Type | Male & Female Flange (M/F Face), Threaded M/F Flange, Small & Large Face Variants |
Design Standard | ASME B16.5, ASME B16.47 Series A/B, EN 1092-1, MSS-SP-44, ISO 7005, BS 4504 |
Size Range | ½″ NB to 60″ NB (DN15 to DN1500) |
Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500 (PN6 to PN400) |
Face Type | Male Face (raised portion ~6.4 mm), Female Face (recess ~5.1 mm), Flat Face, RTJ |
Facing Dimensions | Machined to match ASME B16.5 tolerances ensuring precise gasket seating and face fit |
Threaded Option | Available as Male and Female Threaded Flanges for specific maintenance or pressure applications |
Axial Alignment & Sealing | Male and Female faces ensure concentric alignment and reduce gasket movement under bolt load |
Surface Finish | Spiral Serrated (125–250 AARH), Smooth Face, Concentric Serrated, as per sealing requirement |
Drilling Compatibility | Conforms to standard flange drilling templates for easy mating with other ASME/EN flanges |
End Connections | Supplied with Weld Neck, Slip-On, or Threaded ends as per system design |
Testing & Inspection | Hydrostatic Test, PMI, UT/MPI, Dimensional Check, Face Tolerance Verification, Visual QC |
Certification | EN 10204 Type 3.1 / 3.2, IBR Approval, ISO 9001, PED 2014/68/EU, NACE MR0175 / ISO 15156, ISO 9001 |
Application Industries | Oil & Gas, Chemical Processing, Marine Systems, High-Pressure Steam Lines, Refinery, Offshore Structures |
Origin | Made in India (by Nutech Overseas) |
Export Network | USA, Europe, and Middle East |
Material Category | Male & Female Flange Grades |
---|---|
Stainless Steel Male & Female Flange | ASTM A182 F304 / F304L / F304H, F316 / F316L / F316Ti, F310, F309S, F317 / F317L, F321 / F321H, F347 / F347H, F904L, ASTM A351 CF3 / CF3M / CF8 / CF8M / CF8C, DIN 1.4301, 1.4306, 1.4307, 1.4311, 1.4401, 1.4404, 1.4408, 1.4409, 1.4541, 1.4571, 1.4550, 1.4435, 1.4539 |
Duplex Steel Male & Female Flange | ASTM A182 F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61, UNS S31803 / S32205 |
Super Duplex Steel Male & Female Flange | ASTM A182 F53 / F55 / F57 / F59 / F60 / F61, UNS S32750 / S32760 |
Carbon Steel Male & Female Flange | ASTM A105 / A105N, ASTM A350 LF2, ASTM A694 F52 / F56 / F60 / F65 / F70 / F80, ASTM A216 WCB, DIN 1.0460 / 1.0402 / 1.0619, Die Steel, Mild Steel |
Alloy Steel Male & Female Flange | ASTM A182 F5 / F9 / F11 / F12 / F22 / F91, AISI 4130 / 4140 |
Nickel Alloy Male & Female Flange | Nickel 200 / 201, ASTM B564 |
Monel Male & Female Flange | Monel 400 (UNS N04400), Monel K500 (UNS N05500), ASTM B564 |
Inconel Male & Female Flange | Inconel 600 / 601 / 625 / 690 / 718 / 783 / X750, ASTM B564 |
Incoloy Male & Female Flange | Incoloy 800 / 800H / 800HT (UNS N08800), Incoloy 825 (UNS N08825), Incoloy 925, ASTM B564 |
Hastelloy Male & Female Flange | Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X, ASTM B564 |
Alloy 20 Male & Female Flange | Alloy 20 / 20Cb-3, Carpenter® 20, ASTM B462 |
254 SMO Male & Female Flange | SMO 254 / 6Mo, UNS S31254, DIN 1.4547, ASTM A182 |
Copper Nickel Male & Female Flange | Copper Nickel 90/10 (C70600), 70/30 (C71500), UNS C71640, ASTM B61 / B62 / B151 / B152 |
Copper Male & Female Flange | TP1, TP2, T1, T2, C10100–C12300, C14200–C17200, C21000–C71520, including C10930, C11000, C11400, C12000, C12200, C26000, C28000, C33000, C44300, C70600, etc. |
Brass Male & Female Flange | Grades 3602, 2604, H59, H62, etc. |
Aluminium Male & Female Flange | Aluminium Grades 5052, 6061, 6063, 2017, 7075, etc. |
Titanium Male & Female Flange | ASTM B381 Gr.1 / Gr.2 / Gr.4 / Gr.5 / Gr.7, UNS R50250 / R50400 / R50550 / R50700 / R52400 / R53400 / R56320 / R56400 |
Other Special Grades | Al6XN, Tin Bronze, Aluminium Bronze, Lead Bronze, Nimonic 75 / 80A / 90 |
The key distinction lies in the mating surface design:
Such features make them highly reliable in high-pressure, vibration-sensitive, and hazardous media applications like steam systems, chemical plants, and subsea pipelines.
Male & Female flanges are used in applications that demand tight sealing, precise face-to-face alignment, and enhanced pressure retention. You’ll commonly find them in:
Their machined mating surfaces make them ideal for installations where repeatability and long-term integrity are essential.
No, Male & Female flanges are not directly compatible with Raised Face (RF) or Flat Face (FF) flanges due to their distinctive mating surface profiles:
These flanges follow tight tolerances, so using matched counterparts is crucial for safe and reliable operations.
Yes, Male & Female (M/F) flanges can be reused, but only after careful inspection and proper handling, since their precision-machined faces are critical for sealing. Here's what must be considered before reusing:
Conditions for Safe Reuse:
Important Note:
While Raised Face (RF) flanges offer a bit more flexibility in reuse, Male & Female flanges depend heavily on the integrity of their interlocking faces, making them more sensitive to:
Gasket selection is critical when working with Male & Female flanges, as the sealing surfaces are machined to match each other precisely. Unlike Raised Face (RF) or Flat Face (FF) flanges, M/F designs require gaskets that fit into the female recess and align with the male projection for secure sealing.
Common Gasket Types Used:
At Nutech Overseas, we are proud to be a trusted global exporter of high-quality Male & Female flanges. Our forged flange products are engineered to meet stringent international standards and are shipped to key markets across the world.
Export Destinations Include: