Skip to content
Home » Stainless Steel Flanges » Spectacle Flange

Spectacle Flange


Spectacle Flange

Spectacle Flange is consisted by a paddle blind and a space,  it is also named figure 8 blind flange. The shape like a spectacles,  spectacle flange is mainly for the purpose of easy maintenance of pipeline. Especially for the large diameter piping of chemical project, spectacle blind flange will make the flow switch easily (paddle blind outside is in service, spacer outside is stopped)  and reduce the budget of pipeline maintenance.

Our spectacle flange are made in forging or qualified stainless steel plate, we supply full range of this flange with ASME B16.48 and ASME B16.5 from class150 to class 2500. The materials of stainless steel, nickel-based alloy, duplex steel are available for every rate.

Specification of Spectacle Flange:

Product: Spectacle Flange, Figure 8 Flange
Dimension Range: 1/2” to 24” (DN15 ~DN1800)
Rates/SCH: Class 150—2500
  • Stainless Steel: ASTM A182 F304, F304L, F304/304L, F316, F316L, F316/FP316L, F317L, F321, F321H, F347, F347H, F51(Duplex Steel), N08904etc.
  • Nickel-based Alloy: Monel 400,Inconel 600,Incoloy 800/H,Alloy 20,Hastelloy C276,C22,B2, Cu70Ni30,Cu90Ni10,Titanium etc.
  • Alloy Steel: ASTM A105, ASTM A182 F11, F12, F22, F5, F91, A350 LF2,LF3, A694 F42, F46, F48, F50, F52,
Standards: ANSI B16.15, ANSI B16.47, MSS SP-44, API6A, API 17D, Manufacturer Standard etc.
Our Strength
  • Fast Delivery
  • Various Materials
  • Full set of swivel ring flange, including gaskets and bolts
  • Customized fabrication available
  • Package supplying of piping materials
  • Overlay process
  • Third party inspection available

① Equivalent from EN/DIN is available for above.
②. The material above is for your reference only. The actual inquiry will consider order quantity and delivery time.
③. If didn’t find your material here, you are kindly requested to make a specific enquiry to [email protected] .


  • Offshore
  • Chemical Engineering
  • Onshore Oil&Gas
  • Paper Plants
  • Fertilizer
  • Environment Engineering
  • Power Project
  • Mining
  • Shipyard
  • Mechanical Manufacture
  • Food & Pharmacy

Flanges Catalog


If you can not find the data you need here, please don’t hesitate to contact us.


Let's have a chat

Do you want to learn more? Contact us

We will reply you in 24 hours. Thank you!