ASME B16.5 Weld Outlet Flange
ASME B16.5 Weldoflange: Dimensions | Specifications | Material Grade | Standards | About Weld Outlet Flange | All Product Types
Nutech Overseas is a trusted manufacturer and exporter of high-quality Weldoflanges, designed to provide a strong and compact branch connection in high-pressure piping systems. A Weldoflange combines the features of a weld neck flange and a weldolet, integrating both into a single forged component. This eliminates the need for two separate fittings, reducing welding time, improving structural integrity, and ensuring precision alignment.
Weldoflanges are widely used for branch pipeline connections at 90° angles and are ideal for systems involving high pressure, vibration, and thermal stress. These flanges are particularly suitable for compact spaces where conventional piping connections like tees are not feasible. Available in Standard and Reducing Bore types, they ensure smooth flow transition, minimize turbulence, and reduce fatigue at the weld zone.
We manufacture ASME B16.5 Weldoflanges in pressure ratings from Class 150 to Class 2500 and in sizes ranging from ½″ NB to 24″ NB. Our range includes Butt Weld and Socket Weld outlet flanges, machined with precision to ensure tight tolerances and optimal sealing performance.
Available face types include Raised Face (RF) and Ring Type Joint (RTJ). Every Weldoflange is inspected for dimensional accuracy, material traceability, and surface finish, and can be supplied with certification as per EN 10204 Type 3.1 / 3.2, NACE MR0175, PED, and other international standards.
Whether for oil & gas platforms, petrochemical plants, pressure vessels, refineries, or power generation units, Nutech’s Weldoflanges are engineered to perform under extreme operating conditions.
As a global exporter, we supply weld outlet flanges that meet custom drawing specifications, mating flange standards, and project MTOs — serving EPC contractors and industrial clients across UAE, Saudi Arabia, Germany, South Africa, USA, Qatar, and Southeast Asia.
For complete technical details, including dimensions, pressure rating classes, weight charts, sizes, tolerances, and material specifications of our ANSI B16.5 Weldo Flanges, please download the full Catalog PDF below.
Specification | Details |
---|---|
Flange Type | Weldoflange – Integrates a Weld Neck Flange and Weldolet |
Design Standard | ASME B16.5, B16.25 (welding ends), MSS-SP-97 (reference) |
Size Range | ½″ NB to 24″ NB (DN15 to DN600) – Larger sizes available on request |
Pressure Ratings | Class 150, 300, 600, 900, 1500, 2500 / PN10 to PN400 |
End Connection | Butt Weld (standard) or Socket Weld (on request) |
Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face |
Bore Type | Standard Bore and Reducing Bore (customizable) |
Surface Finish | Stock Finish, Spiral Serrated, Smooth Machined (Ra 3.2–6.3 μm) |
Inspection & Testing | Hydro Test, PMI, UT/MPI, Visual QC, Dimensional Inspection |
Certifications | EN 10204 Type 3.1 / 3.2, NACE MR0175, ISO 9001:2015, PED 2014/68/EU, IBR (if required) |
Application Industries | Oil & Gas, Petrochemical Plants, Refineries, Boilers, High-Pressure Piping |
Origin | Made in India (by Nutech Overseas) |
Export Network | USA, Europe, and Middle East |
Material Category | Weld Outlet Flange Grades |
---|---|
Stainless Steel Weldoflange | 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 Weldoflange | ASTM A182 F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61, UNS S31803 / S32205 |
Super Duplex Steel Weldoflange | ASTM A182 F53 / F55 / F57 / F59 / F60 / F61, UNS S32750 / S32760 |
Carbon Steel Weldoflange | 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 Weldoflange | ASTM A182 F5 / F9 / F11 / F12 / F22 / F91, AISI 4130 / 4140 |
Nickel Alloy Weldoflange | Nickel 200 / 201, ASTM B564 |
Monel Weldoflange | Monel 400 (UNS N04400), Monel K500 (UNS N05500), ASTM B564 |
Inconel Weldoflange | Inconel 600 / 601 / 625 / 690 / 718 / 783 / X750, ASTM B564 |
Incoloy Weldoflange | Incoloy 800 / 800H / 800HT (UNS N08800), Incoloy 825 (UNS N08825), Incoloy 925, ASTM B564 |
Hastelloy Weldoflange | Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X, ASTM B564 |
Alloy 20 Weldoflange | Alloy 20 / 20Cb-3, Carpenter® 20, ASTM B462 |
254 SMO Weldoflange | SMO 254 / 6Mo, UNS S31254, DIN 1.4547, ASTM A182 |
Copper Nickel Weldoflange | Copper Nickel 90/10 (C70600), 70/30 (C71500), UNS C71640, ASTM B61 / B62 / B151 / B152 |
Copper Weldoflange | TP1, TP2, T1, T2, C10100–C12300, C14200–C17200, C21000–C71520, including C10930, C11000, C11400, C12000, C12200, C26000, C28000, C33000, C44300, C70600, etc. |
Brass Weldoflange | Grades 3602, 2604, H59, H62, etc. |
Aluminium Weldoflange | Aluminium Grades 5052, 6061, 6063, 2017, 7075, etc. |
Titanium Weldoflange | 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 |
A Weldoflange is a one-piece forged component that merges a weld neck flange with a weldolet outlet, specifically designed for creating 90° branch connections from a main run pipe. It simplifies complex piping layouts where space, integrity, and pressure handling are critical.
Key Differences vs. Traditional Branch Fittings:
Commonly used in oil & gas, power plants, and offshore applications where precision and pressure integrity are essential.
Proper welding and installation of Weldoflanges is critical to ensure pressure integrity, alignment, and long-term performance of the branch connection.
Key Welding Guidelines:
Installation Notes:
These steps are critical in high-pressure environments like refineries, offshore rigs, and power plants where failure is not an option.
Weldoflanges are preferred in critical pipeline systems because they offer several mechanical and operational advantages over conventional fittings like weldolets + flanges or tees.
Key Advantages:
Widely used in offshore platforms, petrochemical complexes, boiler systems, and FPSO vessels.
Yes, Weldoflanges can be fully customized to meet non-standard design requirements, especially in retrofit projects, offshore rigs, and modular systems where standard flanges won’t fit.
Common Customization Options:
Nutech specializes in manufacturing project-specific Weldoflanges from client drawings, P&ID references, or reverse-engineered samples, with full material traceability and QC documentation.
Nutech Overseas is a global exporter of ASME B16.5 Weldoflanges, serving various industries including oil & gas, petrochemicals, shipbuilding, and power generation. With precision forging, strict quality control, and customizable options, our Weldoflanges are trusted in critical piping systems worldwide.
Major export destinations include:
All Weldoflanges are supplied with EN 10204 3.1 / 3.2 certificates, NACE compliance, and custom packaging, with fast delivery via sea and air freight to meet project deadlines globally.