ASTM A182 F53 Super Duplex Steel Spectacle Figure Eight Blind Flange B16.48
Brand Name:YUHONG
Certification:API,PED,ABS
Model Number:ASTM A105, ASTM A 181, ASTM A 182, GR F1, F11, F22, F5, F9, F91
Minimum Order Quantity:1PC
Delivery Time:7DAYS
Payment Terms:L/C, T/T
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ASTM A182 F53 Super Duplex Steel Spectacle Figure Eight Blind Flange B16.48
A Spectacle Figure Eight Blind Flange (commonly called a Spectacle Blind Flange) per ASME B16.48 is a piping component used to either fully open or fully close a pipeline. It consists of two discs connected by a small section of metal—one solid plate (to block flow) and one with a hole (to allow flow). The flange is typically rotated to switch between open and closed positions.
Key Features:
- Standard: ASME B16.48
- Material: Carbon steel, stainless steel, alloy steel, or other specified materials
- Pressure Ratings: 150#, 300#, 600#, 900#, 1500#, and 2500#
- Sizes: Typically ranges from ½” to 24”
- Application: Used in pipelines to isolate sections for maintenance, testing, or system modifications
A Spectacle Blind Flange is a safety device used in piping systems to either allow or block flow. It consists of two metal discs connected by a bar:
It is typically rotated between these two positions during maintenance or system isolation. Materials: Carbon steel (ASTM A105), stainless steel (ASTM A182 F316/F304), alloy steel, duplex, and special alloys |
Applications:
- Temporary or permanent pipeline isolation
- Shutdowns, maintenance, or hydro testing
- Used in industries like oil & gas, petrochemical, and power plants
Test Certificate
Manufacturer Test Certificate as per EN 10204 / 3.1B
ASTM A182 F53 Super Duplex Steel Spectacle Figure Eight Blind Flange B16.48
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