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Technical specification of spectacle blind flange

Technical specification of spectacle blind flange

There are three types of spectacle flange:the spectacle blind flange,spade flange,spacer flange.The spectacle flange could cut from a plate directly,or produced by forging method.There are the technical specification of spectacle blind flange:

Spectacle Blind Flange In Haihao Group


The main material of spectacle flange are:

Carbon steel: ASTM A105,etc

Low temperature carbon steel: A516 Gr.60, Gr.65 , Gr.70 etc.

Stainless steel: A213 Gr.SS316L,SS304L,SS321,etc.

Spectacle Blind Flange Drawing


Haihao flange factory manufactures the spectacle flanges according to standard ASME/ANSI B16.48,MSS-SP-6.

Spade Spectacle Blind Flange

Sealing face:

The spectacle flange are used together with flanges,so it has a surface requirement.Our spectacle blind flanges are available with raised face(RF),flat face(FF),or RTJ faces as per requirement.

HH 10inch 900LBS SS316 Spectacle Blind Flange


The spectacle flanges always have a handle.Spacer and spade’s handle is for easy control,spectacle blind flange handle is to control and connect the two parts.

If you have any question or you want to know more about the technical specification of flange products,please contact usimmediately!