ASTM A182 Grade F91 Alloy Steel Spectacle Blind Flanges are essential components in piping systems, providing a means to isolate sections of the pipeline for maintenance, repair, or inspection. These flanges are designed with two disks connected by a web or tie bar: one disk acts as a blind flange to block the flow, and the other as a spacer to allow flow. Made from Grade F91 alloy steel, they offer excellent strength, durability, and resistance to high temperatures and pressures, making them ideal for demanding applications in industries such as oil and gas, power generation, and petrochemical. Compliance with ASTM A182 standards ensures these flanges meet stringent quality and performance requirements.
| Property | Details |
|---|---|
| Material | Grade F91 Alloy Steel |
| Standards | ASTM A182, ANSI/ASME B16.5 |
| Type | Spectacle Blind Flange |
| Dimensions | Available in various sizes |
| Pressure Rating | Class 150, Class 300, Class 600, Class 900, Class 1500, Class 2500 |
| Temperature Rating | Suitable for high-temperature applications |
| Surface Finish | Smooth, precision-machined |
| Applications | Power generation, oil and gas, petrochemical |
| Advantages | Easy installation and removal, high strength |
| Function | Isolates sections of piping for maintenance or repair |
| Connection Type | Bolted connection |
| Manufacturing | Precision-machined for accurate fitting |
| Ordering Information | Specify material grade, size, pressure class |
| Suppliers | McMaster-Carr, Grainger, Swagelok, Penn Stainless Products |
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