API 6A Flange Supplier & Exporter in Vietnam, ASME B16.5 A182 F304/316 Weld Neck Raised Face Flanges Suppliers in Hanoi
Omaa Metal Sources is a reliable supplier of high-performance industrial flanges to Vietnam’s growing industrial infrastructure. Our flange solutions support major oil refineries in Dung Quat and Nghi Son, fabrication yards in Hai Phong, thermal plants in Vung Ang, and industrial estates around Ho Chi Minh City and Da Nang. All flanges are engineered for use in critical process applications, manufactured to globally accepted standards like ASME B16.5, B16.47 Series A & B, EN 1092-1, DIN 2633, JIS B2220, and API 6A.
We supply forged, machined, and tested flanges ranging from 1/2″ to 60″ NB, with pressure classes up to 2500# / PN250. Common types include Weld Neck, Blind, Slip-On, Lap Joint, RTJ, and Socket Weld flanges, tailored to deliver high strength and perfect sealing under pressure, heat, and vibration. For aggressive media and offshore use, we offer advanced materials such as Duplex & Super Duplex (F51, F53, F55) and Nickel Alloys (Inconel, Hastelloy, Monel).
Manufactured under ISO and PED-certified facilities, all our flanges undergo ultrasonic inspection, hydro testing, dimensional verification, and are delivered with comprehensive Mill Test Certificates (MTCs) as per EN 10204 3.1/3.2, NACE MR0175, and API 6A. Our material range includes ASTM A105, A350 LF2, A694 F52–F70, A182 F304/316, and B564 grades, suitable for power, petrochemical, water treatment, and oil & gas pipelines in Vietnam’s tropical and coastal environments. Get a Quote.
Flange Types We Supply Across Vietnam
Industrial Flange Specifications in Vietnam
| Specification | Details |
|---|---|
| Size Range | 1/2” (15 NB) to 60” (1500 NB) & Custom Sizes |
| Class / Pressure Rating |
ANSI/ASME: 150#, 300#, 600#, 900#, 1500#, 2500# API: 2000#, 3000#, 5000#, 10000#, 15000# DIN: PN6, PN10, PN16, PN25, PN40, PN64, PN100, PN160, PN250 |
| Standards / Dimensions |
ASME B16.5 (Up to 24”) ASME B16.47 (Series A & B) (Above 24”) MSS SP-44 API 6A EN 1092-1 BS 4504 JIS B2220 DIN 2527, DIN 2631-2635 AWWA C207 |
| Connection Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Material Standards |
ASTM A105 / A105N (Carbon Steel) ASTM A350 LF2 (Low-Temperature Carbon Steel) ASTM A182 F304 / F304L / F316 / F316L (Stainless Steel) ASTM A694 F42, F52, F60, F65, F70 (High Yield Carbon Steel) ASTM A182 UNS S31803 / S32205 / UNS S32750 / UNS S32760 (Duplex & Super Duplex Steel) ASTM B564 UNS N06625, N08825 (Inconel & Incoloy) ASTM B381 (Titanium Gr.2, Gr.5) |
| Materials & Grades |
Carbon Steel: A105, A350 LF2, A694 F52-F70 Stainless Steel: 304, 304L, 316, 316L, 321, 347, 904L Duplex & Super Duplex Steel: F51, F53, F55 Alloy Steel: A182 F1, F5, F9, F11, F22, F91 Nickel Alloys: Inconel 600/625, Monel 400/K500, Hastelloy C22/C276 Copper Alloys: Cu-Ni 70/30, Cu-Ni 90/10 |
Industries We Serve in Vietnam
- Oil Refineries & Petrochemical Plants
- Offshore & Marine Structures
- Thermal and Hydropower Stations
- Water Supply and Treatment Systems
- Shipbuilding and Fabrication Yards
- Chemical Process Industries
Why Choose Omaa Metal Sources for Industrial Flanges in Vietnam?
- Strong presence in industrial centers like Ho Chi Minh City, Hanoi, Da Nang, Dung Quat, Hai Phong, and Vung Tau
- High-performance materials suitable for coastal and high-temperature environments
- Custom designs and non-standard dimensions available
- Quick delivery with international packaging & certifications
- Experience in supplying to EPCs, contractors, and government tenders