ASTM A182 Grade F9 alloy steel spectacle blind flanges are specialized pipe fittings used to either isolate a section of pipe or ensure it is operational. These flanges consist of two discs attached together, one solid for blocking flow and one with a hole for allowing flow. Made from ASTM A182 Grade F9 alloy steel, they provide excellent resistance to high temperatures and pressures, as well as superior corrosion resistance, making them ideal for use in harsh environments like petrochemical plants, power generation facilities, and refineries. Spectacle blind flanges are crucial for maintenance operations, as they allow for easy switching between open and closed positions without removing the flange from the pipe system.
| Property | Details |
|---|---|
| Material | ASTM A182 Grade F9 Alloy Steel |
| Standards | ANSI/ASME B16.48, B16.5 |
| Type | Spectacle Blind Flange |
| Dimensions | Custom sizes available |
| Pressure Rating | Class 150, Class 300, Class 600, Class 900, Class 1500 |
| Temperature Rating | Up to 593°C (1100°F) for ASTM A182 Grade F9 |
| Surface Finish | Smooth, precision-machined |
| Thickness | As per ANSI/ASME standards |
| Applications | Petrochemical, power generation, oil and gas |
| Advantages | High strength, corrosion resistance, durability |
| Function | Isolation or flow operation |
| Manufacturing | Precision-machined for accurate dimensions |
| Ordering Information | Specify material grade, size, pressure class |
| Suppliers | McMaster-Carr, Grainger, Swagelok, Penn Stainless Products |
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