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Spectacle Blind Flange Spacer/ Spade ASME B16.48

Dimension: NPS 1/2″~24″ (15NB-600NB), NPS 26″~60″
Material: Carbon Steel, Stainless Steel, Duplex Steel, Alloy Steel etc.
Certificates: CE-PED 2014/68/EU / ISO 9001 / MTC EN10204 3.1/3.2
Supply Ability: 100 Tons per Month
Non-Standard type: As per the drawing
Payment Term: L/C, T/T
Packing: Export standard Plywood Pallets/ free fumigation wooden case.

Please send emails to sales@steelfittings-flange.com for prices.

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ASME B16.48 Spectacle Blind Flange,  ASME B16.47 Series A/B Large diameter Spectacle Blind Flange,
Figure 8 Blanks, Line Blanks Flanges,  Paddle Blanks & Paddle Spacers, Spades, and Spacer.

Estan pipe fittings is a premier Spectacle Blind Flange manufacturer and supplier in China. A spectacle blind (also called a figure-8 blank) is a pressure-retaining plate with one solid end and one open end connected with a web or the bar, One side of the spectacle blind is open (spacer) and the other side of the spectacle blind is blanked (blind or spade), Normally, a Spectacle Blind is mounted in the “open” position so that flow through the pipe is possible. If the Spectacle Blind in the “close” position is rotated, the pipe is blanked off and no flow is possible.

Paddle Blanks(Spades) are similar to the solid end of a spectacle blind flange, Paddle Spacers(Ring Spacers) are also similar to the open end of a spectacle blind flange. They all have a plain radial handle. Spades and Ring Spacers are basically the same as Spectacle Blinds, except that both are not attached to each other.

Spectacle Blank Flange Specification

Size NPS 1/2″~24″ (15NB-600NB), NPS 26″~60″
Pressure ASME/ANSI Series: Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500
Flange Face Type ASME/ANSI Series: Flat Face(FF), Raised Face(RF), Tongue(T), Groove(G), Female(F), Male(M), Ring type Joint Face(RTJ)
Standards ASME B16.48 Flanges, ASME B16.5 Flanges, ASME B16.47 series A / B Flanges
Coating/Surface Treatment Anti-rust oil, Transparent / Black Anti-rust Painting, Hot Dip Galvanized
Value-Added Services CNC Machining, Customised Flanges


Spectacle Blind Flange Flange Material Type & Grade

Stainless Steel Spectacle Blind Flange Flanges: ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Carbon Steel Spectacle Blind Flange Flanges: ASTM / ASME A/SA 105, ASTM / ASME A 350, ASTM A 181 LF 2 / A516 Gr.70, A36, A694 F42, F46, F52, F60, F65, F70
Alloy Steel Spectacle Blind Flange Flanges: ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Duplex & Super Duplex Steel Spectacle Blind Flange Flanges: ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61

Low-Temperature Carbon Steel Spectacle Blind Flange Flanges: ASTM A350, LF2, LF3
Copper Alloy Steel Spectacle Blind Flange Flanges: UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
Nickel Alloy Long Spectacle Blind Flange Flanges: Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium Gr I/II.

Available Certificates

Manufacturer Test Certificate as per EN 10204 3.1, Third-Party Inspection Report as per EN 10204 3.2, Non-destructive Testing / NDT Report


1. Oil and gas industry
2. Petrochemical industry
3. Power generation industry
4. Pharmaceutical industry
5. Shipbuilding industry
6. Papermaking industry
7. Metallurgy industry.