Forged Flange Blanks
Near-net-shape forged flange blanks for valve, pump, and pipeline applications
| Materials | Carbon Steel, Stainless Steel |
|---|---|
| Processes | Forging, CNC Machining |
| Tolerance | IT8-IT10 |
| Standard | ANSI B16.5, DIN, JIS |
Overview
ORROMFG manufactures near-net-shape forged flange blanks for valve bodies, pump casings, and pipeline connections. Our forged flanges are produced using open-die and closed-die forging techniques that deliver a refined grain structure and superior mechanical properties compared to plate-cut or cast flanges. We supply flange blanks in a wide range of sizes, pressure ratings, and material grades, ready for final machining to customer specifications.
Key Features
- Superior material integrity: Forged grain structure ensures uniform mechanical properties throughout the flange
- Near-net-shape forging: Reduces machining time and material waste compared to bar or plate stock
- Broad size range: From 1/2" to 24" nominal pipe size and custom dimensions
- Multiple pressure classes: 150#, 300#, 600#, 900#, 1500#, and 2500#
- Certified materials: Full traceability with EN 10204 3.1 material certificates
Flange Types
- Weld neck flanges — Forged with integral hub for high-pressure piping systems
- Slip-on flanges — Cost-effective forged blanks for general pipeline service
- Blind flanges — Solid forged blanks for pipeline end closures and pressure testing
- Socket weld flanges — Forged blanks for socket-welded piping connections
- Threaded flanges — Forged blanks ready for thread machining
- Custom flange configurations — Specialty flanges to customer drawings
Specifications
| Specification | Value |
|---|---|
| Material | Carbon steel, stainless steel, duplex steel |
| Process | Hot Forging / Cold Forging |
| Tolerance | IT8-IT10 |
| Standard | ANSI B16.5, DIN, JIS |
| Surface Finish | As-forged / Machined / Heat Treated |
| Weight Range | 2 - 100 kg |
Applications
- Pipeline and piping systems: ASME B16.5 and DIN standard flanges for oil & gas, petrochemical, and water treatment
- Valve manufacturing: Forged valve body flanges and bonnet flanges
- Pump assemblies: Inlet and outlet flange blanks for centrifugal and positive displacement pumps
- Pressure vessels: Nozzle flanges and manway flanges for pressure vessel fabrication
- Power generation: Flanges for steam, water, and feedwater systems
Material Options
| Material | Standard | Typical Service |
|---|---|---|
| A105 Carbon Steel | ASTM A105 | General-purpose, low-temperature service |
| 304 / 304L Stainless | ASTM A182 F304/F304L | Corrosion-resistant piping systems |
| 316 / 316L Stainless | ASTM A182 F316/F316L | Chemical and marine service |
| Duplex 2205 | ASTM A182 F51 | Chloride and high-pressure service |
| Alloy Steel F11/F22 | ASTM A182 F11/F22 | High-temperature power generation |
For fully machined flange assemblies, explore our Precision Flange Adapters in the machining category, or review our full Forging capabilities.
Related Forging Products
- Hot Forged Steel Shafts — Heavy-duty hot forged steel shafts for drivetrain systems
- Cold Forged Fasteners — High-strength cold forged fasteners for secure fastening
