Weldneck Flanges
Riyaarth Overseas excels as a premier manufacturer and exporter of high-quality ASME/ANSI/DIN standard weld neck flanges. Known for our robust and precision-engineered weld neck forged flanges, we cater to a range of industries, including shipbuilding, power generation, petrochemical, oil refineries, and more. Our commitment to quality and customer satisfaction ensures we meet the rigorous demands of various high-pressure applications.
Weld neck flanges are distinguished by their long tapered hub, which provides important reinforcement for use in various high-pressure applications. They are ideal for pipelines where hot or cold temperatures are prevalent. The flanges’ necks are welded to the pipe, distributing stress and reducing the concentration at the base of the hub.
Specifications and Range
- Size Availability: From 1/2″ (15 NB) to 48″ (1200NB), accommodating a wide range of pipeline diameters.
- Standards Compliance: ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, and AWWA. Custom specifications can be met upon request.
- Pressure Ratings: Class 150 to Class 2500, and PN6 to PN64, to suit diverse operational requirements.
- Materials:
- Carbon Steel: ASTM A105/A105N, A350 LF1, LF2, and LF3, A694 F42-F70.
- Stainless Steel: ASTM A182 F304/304L, F316/316L, F310, F321, and F904L.
- Alloy Steel: ASTM A182 F1, F5, F9, F11, F22, F91.
- Special Alloys: Including Duplex, Super Duplex, and Nickel Alloys.
Flange Face Types
Flat Face (FF), Raised Face (RF), and Ring Type Joint (RTJ), each suitable for different sealing mechanisms and pipeline robustness.
Customization and Added Services
- Coatings and Surface Treatments: Options include anti-rust paint, oil black paint, yellow transparent, zinc plating, and both cold and hot dip galvanizing.
- CNC Machining: Custom flanges are machined to precise dimensions to meet unique project requirements.
Quality Assurance
Every weld neck flange undergoes a rigorous inspection regime to ensure conformity to international quality standards such as ASTM, ASME, MSS, DIN, EN, and JIS. We provide:
- Test Certificates: EN 10204 3.1B, Raw Materials Certificate, 100% Radiography Test Report, and Third Party Inspection Report.
- Inspection: Visual examination and, upon request, third-party certification to verify material reports and dimensional accuracy.
Marking & Packing
Each flange is marked with the grade, size, class, and heat code for full traceability. Standard export packaging in wooden cases ensures that products are protected during transit.
Global Reach
Our weld neck flanges are in high demand across international markets including the USA, Europe, the Middle East, and Asia.
Contact Us
For top-quality weld neck flanges and expert advice on choosing the right flange for your piping needs, contact Riyaarth Overseas today. Our team is ready to assist you in selecting the perfect flanges to ensure the success and reliability of your projects.
FAQ's
Products
Industry We Serve
- Oil & Gas industries
- Chemical process industries
- Pump and valve in high pressure component
- Food industries
- Pulp and paper industry
- Aerospace industry
- Power plant
- Mechanical component
- Sugar industry
- Cement industry