Introduction
The ASTM A182 F304 Forged Orifice Flange is a specialized stainless steel flange designed for precise flow measurement and control in piping systems. Manufactured to ASME B16.36, it incorporates an orifice plate between a pair of flanges to measure fluid or gas flow accurately.
DLSS supplied 3″ WNRF (Weld Neck Raised Face) Orifice Flanges, SCH40S, Class 600#, forged from A182 F304 stainless steel, for an end-user project with GE. This demonstrates DLSS’s capability to deliver high-performance components for critical industrial applications.
Key Features
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Material: ASTM A182 F304 (Austenitic Stainless Steel)
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Type: Weld Neck Raised Face Orifice Flange (WNRF)
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Size: 3″ (DN80)
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Wall Thickness: SCH40S
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Pressure Rating: Class 600#
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Standard: ASME B16.36 (Orifice Flanges)
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Application: Flow measurement in industrial piping systems
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End User: GE
Specifications
| Item | Details |
|---|---|
| Standard | ASTM A182 / ASME B16.36 |
| Material | Stainless Steel F304 |
| Type | Forged Flange – Weld Neck Raised Face Orifice (WNRF) |
| Size | 3″ (DN80) |
| Schedule | SCH40S |
| Pressure Rating | 600# |
| Surface | Machined, rust-preventive coating |
| End User | GE (General Electric) |
| Applications | Power plants, heat exchangers, chemical plants, flow monitoring systems |
Applications
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Power Generation – used in steam, gas, and water piping systems to monitor and control flow (supplied to GE).
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Oil & Gas Industry – accurate measurement of hydrocarbons and process fluids.
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Chemical & Petrochemical – control of acids, gases, and corrosive media.
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Industrial Piping Systems – integration into heat exchangers, boilers, and reactors.
Advantages of F304 Stainless Steel
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Corrosion Resistance – effective against oxidation and general corrosive environments.
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Strength & Durability – forged structure ensures reliability under high pressure (Class 600#).
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Versatility – widely used in flow measurement systems across multiple industries.
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Cost Efficiency – more economical than higher alloy grades, suitable for general service.
Why Choose DLSS?
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Specialized supply of orifice flanges (ASME B16.36), forged fittings, and pipe accessories.
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Strict Quality Control – PMI, UT, ET, Hydro, dimensional checks.
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Third-Party Inspection – SGS, BV, TUV certifications available.
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Export Packaging – plastic caps, PE wrap, ISPM-15 wooden cases.
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Proven Track Record – supplied GE and other leading global end users with stainless steel flanges and fittings.
