ASME B16.5 Flange Supplier in Sri Lanka, Weld Neck Flanges in Colombo (Sri Jayawardenepura Kotte)
At Omaa Metal Sources, we deliver engineered flange solutions to meet the evolving demands of Sri Lanka’s oil & gas, chemical processing, and marine infrastructure sectors. Our extensive portfolio includes ASME B16.5, DIN, EN 1092-1, and API 6A flanges, built to handle high-pressure pipelines, aggressive media, and extreme temperature fluctuations. Whether it’s a hydrocarbon processing unit in Colombo, a thermal power plant in Trincomalee, or a shipyard in Galle, our flanges are tailored to the technical realities of each application.
Our flange are available in a wide pressure class range from 150# to 2500# (PN6 to PN250), and sizes from 1/2” NB to 60” NB, making them suitable for everything from compact water lines to large-bore oil pipelines. We offer precision-manufactured flanges in a wide array of configurations including Weld Neck, RTJ, Socket Weld, and Lap Joint, optimized for reliable sealing and fatigue resistance under cyclic loading conditions. For severe service environments, our Ring Type Joint (RTJ) flanges are ideal for critical sealing applications.
Material grades play a crucial role in flange performance. That’s why we offer a full spectrum—from ASTM A105 carbon steel for standard applications, to Duplex (F51) and Super Duplex (F53, F55) for chloride-rich environments like coastal and offshore installations. For chemical plants operating in corrosive atmospheres, we recommend Nickel Alloys such as Inconel 625 and Monel 400, all conforming to ASTM B564 and tested per ASTM A182. All our flanges are backed by MTCs, hydro tests, PMI, and ultrasonic inspection. Get a Quote.
Range of Flanges Supplied Across Sri Lanka
Industrial Flange Specifications in Sri Lanka
| 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 in Sri Lanka We Serve
- Oil & Gas
- Petrochemicals & Refineries
- Power Generation
- Shipbuilding & Marine
- Water & Waste Treatment
- Food & Beverage Processing
Why Choose Omaa Metal Sources as Your Flange Supplier in Sri Lanka?
- Global quality standards for every flange
- Fast delivery across all key cities in Sri Lanka
- In-stock range for urgent requirements
- Third-party testing & compliance assurance
- Customized manufacturing as per project specs
- End-to-end documentation and traceability