Spectacle flanges are highly specialized pieces of equipment that can be used for a variety of industrial applications. They provide efficient sealing, reliable performance and are designed to help facilitate inspection, repair and maintenance needs. Spectacle s, also known as spades or ring spacers. A Spectacle Flange is a specialized piece of equipment that can be used in many industrial applications. It features a drilled hole and two gaskets on either side; when assembled, the combination of these components effectively isolates objects while providing a secure and reliable seal. Typically, these flanges are composed of stainless steel or other durable materials.
| Material Category | Available Grades |
|---|---|
| Stainless Steel Flanges | ASTM A182 / A240 F304, F304L, F304H, F316, F316L, F316Ti, F310, F310S, F321, F321H, F317, F347, F347H, F904L. |
| Duplex & Super Duplex Steel Flanges | ASTM/ASME A/SA 182 F44, F45, F51, F53, F55, F60, F61. |
| Carbon Steel Flanges | ASTM/ASME A/SA 105, ASTM/ASME A350, ASTM A181 LF2, ASTM A516 Gr.70, ASTM A36, ASTM A694 F42, F46, F52, F60, F65, F70. |
| Low Temperature Carbon Steel Flanges | ASTM A350 LF2, LF3. |
| Alloy Steel Flanges | ASTM/ASME A/SA 182 & A387 F1, F5, F9, F11, F12, F22, F91. |
| Copper Alloy Flanges | ASTM SB61, SB62, SB151, SB152, UNS C70600 (Cu-Ni 90/10), C71500 (Cu-Ni 70/30), C10100, C10200, C10300, C10800, C12000, C12200. |
| Nickel Alloy Flanges | ASTM SB564, SB160, SB472, SB162, Nickel 200 (UNS N02200), Nickel 201 (UNS N02201), Monel 400 (UNS N04400), Monel K500 (UNS N05500), Inconel 800 (UNS N08800), Inconel 825 (UNS N08825), Inconel 600 (UNS N06600), Inconel 625 (UNS N06625), Inconel 601 (UNS N06601), Hastelloy C276 (UNS N10276), Alloy 20 (UNS N08020). |
Our Spectacle Blind Flanges are used for line isolation and maintenance switching between flow and block modes. We maintain focus on standards compliance, dimensional accuracy, and material traceability to support project and replacement requirements.
Industries Served: oil & gas, petrochemical, refineries, power generation, EPC projects, marine, water treatment, and general engineering.
Supply Regions: India, GCC/Gulf markets, and global export projects with commercial support for manufacturer, supplier, stockist, and exporter requirements.
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Certified stainless steel billets are selected according to ASTM, ASME, and EN standards.
Billets are heated and forged into the required flange shape for maximum strength.
Precision machining creates the bore, facing, bolt holes, and required dimensions.
Stress relieving and solution annealing are performed whenever required.
PMI, dimensional inspection, hydrostatic testing, and NDT ensure product quality.
Flanges are cleaned, pickled, passivated, and finished as per customer requirements.
Each flange receives grade, size, heat number, and standard identification markings.
Products are packed securely with flange protectors, wooden pallets, and export-ready crates.
How does a Spectacle Blind function compared to a standard Blind Flange?
A Spectacle Blind consists of a solid plate and a spacer ring connected by a web, allowing it to rotate between an open-flow position and a closed-blocking position. It provides a clear visual indication of whether a pipeline is isolated, whereas a standard Blind Flange is a solid plate used to permanently or semi-permanently seal the end of a piping system.
How does a Spectacle Blind Flange work?
A Spectacle Blind, also known as a Figure-8 Blank, is installed between two flanges and includes both a solid blind and a hollow spacer. By rotating the assembly, operators can quickly change a pipeline from an open-flow condition to a fully isolated state without removing the piping.
In what pressure classes do you manufacture Spectacle Blinds?
We manufacture Spectacle Blinds in accordance with ASME B16.48 in Class 150, 300, 600, 900, and 1500 pressure ratings. Custom sizes above NPS 24 are also available for heavy-duty industrial and utility applications.