Elboflange Suppliers
ASME B16.5 Elbow Flange Outlet
ASME B16.5 Elboflange: Dimensions | Specifications | Material Grade | Standards | About Elbow Outlet Flanges | All Product Types
Elboflanges are specially designed forged fittings that provide a 90° branch connection directly from a pipe elbow or bend. They integrate the functionality of an elbow, a weld outlet (weldolet), and a flange into a single, space-saving component, making them highly efficient in complex or compact piping layouts. This combination eliminates multiple joints and significantly reduces the potential for misalignment or leakage.
In high-pressure and high-vibration systems, Elboflanges offer superior fatigue resistance and better flow characteristics compared to traditional outlet fittings. Their use ensures tight radius piping transitions, especially in offshore modules, refineries, petrochemical plants, and pressure vessels where both elbow and flange alignment must be precise.
These fittings are available in both standard bore and reducing bore types, depending on the branch pipe size. Offered in ASME B16.5 pressure classes ranging from 150 to 2500, and sizes from ½″ NB to 24″ NB, Elboflanges are manufactured with high precision using CNC-controlled forging and machining systems.
Depending on the piping design, the outlet can be butt weld or socket weld, while the facing type can be Raised Face (RF) or Ring Type Joint (RTJ). All Elboflanges undergo strict dimensional verification, surface finish checks, hydrostatic testing, and optional NDE like UT or MPI.
Elboflanges are also suitable for applications involving aggressive fluids or gases, provided appropriate materials like Stainless Steel, Duplex, Super Duplex, Alloy 625, or Incoloy 825 are used. Nutech also provides complete MTC documentation with EN 10204 3.1 / 3.2, along with compliance to NACE MR0175 and PED 2014/68/EU directives.
With years of expertise in producing custom forged flanges, Nutech Overseas delivers Elboflanges as per client-supplied drawings, international specifications, and project-specific piping class requirements — supplying across markets like Saudi Arabia, Germany, UAE, South Africa, Malaysia, and the USA.
Precision Forged Elboflanges for 90° Branch Outlet from Pipe Elbows – ASME B16.5 Standard, Class 150 to 2500, Sizes ½″ to 24″ in Stainless, Carbon, Duplex, High Nickel Alloy Steel.
For complete technical details, including dimensions, pressure rating classes, weight charts, sizes, tolerances, and material specifications of our ANSI B16.5 Elbo Flanges, please download the full Catalog PDF below.
Reducing and Standard Bore Elboflanges with Raised Face or RTJ Facing – Suitable for Compact High-Pressure Piping Layouts in Offshore, Refining & Process Industries.
Technical Specifications of Elboflanges
| Specification | Details |
|---|---|
| Product Type | Elboflange – Elbow Outlet Flange Fitting |
| Design Standard | ASME B16.5, MSS-SP-97 (Reference for branch outlet design) |
| Size Range | ½″ NB to 24″ NB (DN15 to DN600) |
| Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500 |
| End Connection | Butt Weld (standard) or Socket Weld (on request) |
| Face Type | Raised Face (RF), Ring Type Joint (RTJ) |
| Bore Type | Standard Bore & Reducing Bore |
| Branch Angle | 90° Outlet from Elbow or Bend |
| Flange Drilling | As per ASME B16.5 / Custom Drilling on Request |
| Surface Finish | Stock Finish (3.2–6.3 μm), Spiral Serrated, Smooth |
| Inspection & Testing | Hydro Test, PMI, UT, Dimensional Inspection, Visual QC |
| Certifications | EN 10204 3.1 / 3.2, NACE MR0175, PED 2014/68/EU, ISO 9001 |
| Application Industries | Oil & Gas, Petrochemicals, Offshore, Refining, Boiler Systems, Power Generation |
| Origin | Made in India (by Nutech Overseas) |
| Export Network | USA, Europe, and Middle East |
Complete Material Grade Chart - Class 150 Elbo Flange
| Material Category | Elbow Flange Outlet Grades |
|---|---|
| Stainless Steel Elboflange | 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 Elboflange | ASTM A182 F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61, UNS S31803 / S32205 |
| Super Duplex Steel Elboflange | ASTM A182 F53 / F55 / F57 / F59 / F60 / F61, UNS S32750 / S32760 |
| Carbon Steel Elboflange | 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 Elboflange | ASTM A182 F5 / F9 / F11 / F12 / F22 / F91, AISI 4130 / 4140 |
| Nickel Alloy Elboflange | Nickel 200 / 201, ASTM B564 |
| Monel Elboflange | Monel 400 (UNS N04400), Monel K500 (UNS N05500), ASTM B564 |
| Inconel Elboflange | Inconel 600 / 601 / 625 / 690 / 718 / 783 / X750, ASTM B564 |
| Incoloy Elboflange | Incoloy 800 / 800H / 800HT (UNS N08800), Incoloy 825 (UNS N08825), Incoloy 925, ASTM B564 |
| Hastelloy Elboflange | Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X, ASTM B564 |
| Alloy 20 Elboflange | Alloy 20 / 20Cb-3, Carpenter® 20, ASTM B462 |
| 254 SMO Elboflange | SMO 254 / 6Mo, UNS S31254, DIN 1.4547, ASTM A182 |
| Copper Nickel Elboflange | Copper Nickel 90/10 (C70600), 70/30 (C71500), UNS C71640, ASTM B61 / B62 / B151 / B152 |
| Copper Elboflange | TP1, TP2, T1, T2, C10100–C12300, C14200–C17200, C21000–C71520, including C10930, C11000, C11400, C12000, C12200, C26000, C28000, C33000, C44300, C70600, etc. |
| Brass Elboflange | Grades 3602, 2604, H59, H62, etc. |
| Aluminium Elboflange | Aluminium Grades 5052, 6061, 6063, 2017, 7075, etc. |
| Titanium Elboflange | 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 |
International Flange Standards We Manufacture & Supply
An Elboflange is a custom-forged component that integrates a 90-degree elbow, a branch outlet, and a flange face into a single fitting. It is specifically engineered for use in piping systems where a branch connection is required directly from an elbow — eliminating the need for a separate elbow, weldolet, and flange.
Why Elboflanges Are Preferred:
- Space-Saving Design: Ideal for compact plant layouts or skid-mounted modules
- Fewer Welds: Reduces welding time and NDT inspection requirements
- Improved Structural Strength: Fewer stress concentration points
- Precise Alignment: Maintains centerline and flow direction accuracy
- Leak Reduction: Fewer joints mean fewer leak paths
- Compatible with High-Pressure Classes: Suitable for Class 150 to 2500 services
Used extensively in offshore platforms, FPSOs, pressure vessels, and petrochemical piping systems, Elboflanges enhance performance, safety, and installation efficiency in demanding conditions.
Elboflanges are manufactured with various facing types and connection options to suit different sealing methods, pressure classes, and piping layouts.
Available Facing Types:
- Raised Face (RF) – Most commonly used; provides good sealing with standard gaskets
- Ring Type Joint (RTJ) – Ideal for high-pressure and high-temperature service where metal-to-metal sealing is required
Outlet Connection Options:
- Butt Weld – Standard option for permanent, strong connections
- Socket Weld – Available on request for smaller sizes and low to medium-pressure systems
- Custom Machined End – For specialty piping class or client-specific requirements
Choosing the correct face type and weld connection depends on the application pressure rating, fluid media, gasket type, and maintenance requirements.
Elboflanges significantly enhance fabrication speed, system reliability, and overall project cost-efficiency in complex industrial piping setups. By combining an elbow, a branch outlet, and a flange into one precision-forged unit, they eliminate multiple fabrication steps.
Key Efficiency Benefits::
- Reduces Weld Joints: Fewer welds mean lower installation time and less non-destructive testing (NDT)
- Simplifies Pipe Layout: Replaces three components with one — perfect for skid-based and modular installations
- Enhances Integrity: Minimizes misalignment and leak risks due to better dimensional control
- Lowers Inspection & QC Time: With fewer fabrication points, QA/QC becomes faster and more reliable
- Saves Space: Compact design is ideal for offshore platforms, refineries, and shipbuilding yards
This makes Elboflanges a smart choice for EPC contractors, fabricators, and plant engineers aiming to reduce complexity without compromising strength or safety.
Yes, Elboflanges can be custom-manufactured to suit corrosive, abrasive, or high-temperature service environments by selecting appropriate materials and coatings.
Suitable Material Options:
- Stainless Steel (304, 316, 321) – General corrosion resistance
- Duplex & Super Duplex (UNS S31803 / S32750) – High strength and chloride resistance
- Nickel Alloys (Inconel 625, Incoloy 825, Monel 400) – Excellent for acidic and high-temperature fluids
- Alloy Steel (A182 F11, F22, F91) – Suitable for elevated pressure and temperature applications
Optional Surface Treatments:
- PTFE lining, fusion bonded epoxy, or special coatings for enhanced chemical protection
- NACE MR0175 compliance for sour service environments (oil & gas, offshore)
With the right grade selection and manufacturing control, Elboflanges can perform safely and reliably in aggressive process media, superheated steam, chloride environments, and acidic or alkaline fluids.
We are a trusted global exporter of Elboflanges, supplying precision-forged components to more than 40 countries across diverse industries including oil & gas, petrochemical, marine, power, and process industries.
Major Export Destinations:
- Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait
- Europe: Germany, Italy, Netherlands, Spain, France
- Africa: South Africa, Egypt, Nigeria
- Southeast Asia: Singapore, Malaysia, Indonesia, Thailand
- America: United States, Mexico, Brazil
- Others: Australia, South Korea, Turkey
All Elboflanges are delivered with complete documentation, including EN 10204 3.1/3.2 test certificates, and packed according to international export norms to ensure damage-free global delivery.
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