Blind Flanges for Industrial Applications
Blind flanges are critical components for pipeline isolation and pressure testing in oil and gas, chemical, and power generation industries.
Types of Blind Flanges
- Standard blind flanges: ASME B16.5 Class 150-2500
- High pressure blind flanges: API 6A certified
- Large diameter blind flanges: Up to DN4000
- Spectacle blind flanges: For frequent isolation
Material Selection
- Carbon steel ASTM A105: General service
- Stainless steel 304/316: Corrosive environments
- Alloy steel F11/F22: High temperature service
- Duplex steel 2205: Marine applications
Flange Gaskets for Blind Flanges
- Non-asbestos sheet: Standard applications
- Spiral wound: High pressure sealing
- Ring type joint: Extreme pressure service
Installation Standards
Follow ASME B31.3 process piping code for proper installation and torque specifications.
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