Nakamura Stainless, located in Pulau Ujong, Singapore, is a well-known manufacturer and supplier of high-quality stainless steel piping parts. One of its specialized products is the Stainless Steel Spectacle Blind Flange, which is designed for systems needing regular maintenance or isolation. This flange consists of a solid plate and a ring, connected by a small piece of metal. This setup allows for easy switching between open and closed positions. Made to strict international standards, spectacle blind flanges from Nakamura Stainless provide secure shut-off and reliable performance in industries like oil and gas, chemical processing, and power generation.
Stainless steel Spectacle Blind Flanges offer excellent corrosion resistance, durability, and strength, making them ideal for harsh environments. They ensure reliable flow isolation during maintenance and testing, enhancing safety and efficiency. Their ease of installation and low maintenance requirements contribute to cost savings. With a high melting point and resistance to extreme temperatures, these flanges are suitable for various industrial applications, including chemical, petrochemical, and oil & gas industries, ensuring long-lasting performance and reliability.
| 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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Stainless Steel Spectacle Blind Flanges are usually made from grades like SS 304, SS 316, or 904L. These grades contain 18 to 20% chromium, 8 to 14% nickel, and molybdenum in the case of 316 and 904L, giving them extra resistance to corrosion and chemical damage. These flanges have excellent mechanical strength, with tensile strength ranging from 485 to 620 MPa. The solid side is used to block flow, while the ring side allows normal operation. Their corrosion-resistant and high-strength design ensures safe, leak-proof isolation in high-pressure and high-temperature settings, especially where regular inspection or servicing is needed.
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@www.nakamurastainless.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 mainly used in pipeline systems that need frequent isolation for inspection, maintenance, or shutdown. Common places of use include oil refineries, chemical plants, offshore platforms, and power stations. They offer a simple yet effective way to block or open flow without taking apart the piping system. These flanges are ideal for ensuring safety during pressure testing or equipment isolation. Their corrosion resistance, strength, and ease of use make them a popular choice in high-integrity piping systems exposed to harsh chemicals, high temperatures, or changing pressure conditions.
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