This page explains how Forged Steel Flange is classified within Metal Forging, Pressing, Stamping. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
Forged steel ring with bolt holes for connecting pipes, valves, or equipment in industrial piping systems.
Technical details and manufacturing context for Forged Steel Flange
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Nominal DiameterRequired | 15–600 mm | Pipe connection sizeISO 7005-1 |
| Pressure ClassRequired | 150–2500 class | Pressure rating (150, 300, 600, etc.)ASME B16.5 |
| Bolt Circle DiameterRequired | 60.3–774.7 mm | Diameter of bolt hole circleASME B16.5 |
| Number of Bolt HolesRequired | 4–32 holes | Total bolt holesASME B16.5 |
| Bolt Hole DiameterRequired | 16–33 mm | Diameter of bolt holesASME B16.5 |
| Flange ThicknessRequired | 14.3–63.5 mm | Thickness of flange bodyASME B16.5 |
| Operating Pressure | 1.0–1.6 MPa | Below 1.0 MPa the seat load is insufficientISO 5208 |
| Operating Temperature | -40–400 °C | Material dependent; above 400°C derating requiredASME B16.5 |
| Material Grade | A105, F304, F316 | Carbon steel or stainless steelASTM A105, A182 |
| Surface Finish | 3.2–6.3 μm Ra | Sealing surface finish for gasketISO 1302 |
| Weight | 0.5–450 kg | Depends on size and pressure class |
| Tolerance | ±0.5 mm | General machining toleranceISO 2768-m |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Forged Steel Flange.
| pressure: | Up to 2500 psi (172 bar) for standard ANSI B16.5 Class 150-2500 |
| other spec: | Flow Rate: Dependent on pipe size and system design; Slurry Concentration: Suitable for moderate abrasion, not recommended for highly erosive slurries >40% solids by weight |
| temperature: | -20°C to 540°C (-4°F to 1004°F) |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
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A practical evidence checklist for RFQ preparation and supplier evaluation.
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Forged steel flanges are available in carbon steel, stainless steel, and alloy steel. Common material grades include A105, F304, and F316, as referenced in ASTM A105 and A182 standards. The specific material grade should be selected based on the application's pressure, temperature, and corrosion requirements.
Pressure classes range from 150 to 2500 per ASME B16.5. Operating temperature ranges from -40°C to 400°C, with derating required above 400°C. Always verify the exact ratings for the specific flange model with the manufacturer.
The nominal diameter ranges from 15 to 600 mm per ISO 7005-1. The flange size must match the pipe connection size. Additionally, consider the pressure class, bolt circle diameter, number of bolt holes, and flange thickness, which are specified in ASME B16.5. Consult the manufacturer's data for the specific flange model.
Key standards include ISO 7005-1 for nominal diameters, ASME B16.5 for pressure classes and dimensions, and ISO 1302 for surface finish. Material grades are referenced in ASTM A105 and A182. These standards serve as procurement references; verify compliance with the supplier.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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