Lecong Stainless is a reputable stainless steel spectacle blind flange manufacturer and supplier operating in Da Nang, Vietnam. With a reputation for offering products that comply with international engineering and safety standards, Lecong operates across industries such as oil and gas, chemical processing, and marine. Their stainless steel spectacle blinds are carefully machined using sophisticated manufacturing technology to guarantee dimensional accuracy, leak-tightness, and extended lifespan. With high-pressure design, these flanges find applications in isolating or opening piping system sections for maintenance or safety reasons. Lecong provides a variety of sizes and pressure classes to meet varying customer demands.
Stainless spectacle blind flanges are usually made from metals such as ASTM A182 F304, F304L, F316, and F316L, which provide superior corrosion resistance and longevity. These flanges are made up of two metal discs: one solid (blind) and one open with a hole (spacer), joined by a piece of metal. The tensile strength of such flanges is between 515 and 620 MPa, with a yield strength of about 205 MPa. They are fitted between two pipe flanges with the ability to conveniently isolate flow by merely rotating the spectacle. Their stainless steel content guarantees high performance in corrosive and high-temperature applications.
| Size | 1/2″ to 48″ |
| Standards | MSS SP44, ASA, ANSI B16.47 Series A & B, ANSI B16.5, API-605, AWWA, Custom Drawings. |
| Pressure Ratings | PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Pressure class | 150#, 300#, 600#, 1500# |
| Dimensions | BS3293, Table D, E, F, & H, ANSI, PN6, 10, 16, 25, 64 BS10, BS4504, MSS- SP-44, DIN Standards |
| Flange Face Type Manufacturer | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Coating/Surface Treatment | Oil Black Paint, Yellow Transparent, Anti-rust Paint, Zinc Plated, Cold and Hot Dip Galvanized. |
| Test | Hydrostatic testing machine, X-ray detector, Direct-reading Spectrograph, UI trasonic flaw detector, Magnetic particle detector |
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Contact us to get a quick quote for your requirement.
We ensure complete transparency for our Stainless Steel Spectacle Blind Flanges with top-quality assurance. Every order is accompanied by essential documentation, including a commercial invoice, packing list, fumigation certificate, heat treatment chart, and a NABL-approved lab test report. We provide Material Test Certificates as per EN 10204/3.1b, PMI Test Certificates, 100% radiography test reports, and Third-Party Inspection Certificates. Our comprehensive documentation is meticulously organized to guarantee maximum client satisfaction.
When selecting a stainless steel spectacle blind flange, consider factors such as pressure rating, temperature resistance, corrosion resistance, and compatibility with the system’s fluid and mechanical conditions. Additionally, ensure the flange material aligns with the specific environmental and industrial requirements.
Yes, you can order Stainless Steel Spectacle Blind Flange in custom sizes and polishes to meet your specific requirements. For more details, mail us at sales@lecongstainless.com
Stainless Steel Spectacle Blind Flanges typically do not require corrosion protection coatings due to their inherent corrosion resistance. However, in highly corrosive environments, additional coatings may be applied for enhanced protection.
Stainless steel spectacle blind flanges are extensively utilized in maintenance-heavy pipeline systems necessitating routine maintenance, flow control, or occasional shutdown. Found predominantly in the oil and gas, petrochemical, power generation, water treatment, and offshore drilling industries, they offer a safe and reliable means of plugging off a portion of the pipeline without the need to disassemble the system. The “blind” face of the flange is employed to prevent flow, and the “spacer” face is used to permit flow to pass. Their resistance to corrosion, strength mechanically, and ease of application make them an optimal selection for demanding pressure-containing applications.
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