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ASME B16.48 Spectacle Blind Flange Spade, Ring Spacer
ASME B16.48 forged spectacle blinds flanges class 1500
Standard: ANSI/ASME B16.48
Flange type: spectacle blinds flanges
Size range: 1/2
Pressure: Class 1500
Material: Stainless steel , Alloy Steel , Carbon Steel
Spectacle blinds (also defined “spectacle flanges”) are manufactured from steel plates and are basically two interconnected discs: one is actually a ring (i.e. a disc with a hole of the same bore size of the pipeline), the other is a solid disc.
Spectacle Blinds Specification
Standard: ASME B16.48
Flange type: spectacle blinds flanges
Size range: 1/2"-24"
Pressure class: Class 150-Class 2500
Surface treatment: Anti-rust oil, transparent/yellow/black,Anti-rust paint, Zinc,Hot dipped galvanized SPECTACLE BLIND TYPES:
Flat face spectacle blind (FF): similar to a flat face flange, the surface of the disc is flat (suited for flat face gaskets, for low-pressure applications).
Raised face spectacle blind (RF): likewise raised face flanges, there is an additional thickness on the surface of the disc. This type fits semi-metallic gaskets, as the spiral wound type.
Ring joint face spectacle blind (RTJ): a groove is inscribed on the surface of the disc. This type is used in conjunction with ring joint gaskets.
Material:
Stainless Steel Material Spectacle Blinds:
ASTM A182 F304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L Duplex stainless steel UNS S32304,S31803,S32205.
Super Duplex stainless steel UNS S32750/S32760/S31260/S32550/S32707
Carbon Steel Material Spectacle Blinds :
ASTM A105, Q235, A350 LF2,ASTM A694 F42/F46/F52/F60/F65/F70/F80
Alloy Steel Material Spectacle Blinds:
ASTM A 182, GR F1,F5, F9, F11, F22, F91
Copper&Nickel Alloy Material Spectacle Blinds:
CU/NI 90/10, CU/NI 70/30
Nickel Alloy Material Spectacle Blinds:
Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22,C276
Surface treatment: Anti-rust oil, transparent/yellow/black,Anti-rust paint, Zinc,Hot dipped galvanized Usage: Oil field, Offshore, Water system, Shipbuilding, Natural gas,Electric power, Pipe projects,etc.
Standard: ANSI/ASME B16.48
Flange type: spectacle blinds flange
Size range: 1/2"-24"
Pressure class: Class 1500
Material : Stainless steel , Alloy Steel , Carbon Steel