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Spectacle Blind Flange, ASTM A182 F316L Stainless Steel Figure 8 RF Flange ASME B16.48
Spectacle Blind Flange, also known as Figure 8 Flange, is combination of the two which can be rotated to function as a Single Bind or a Ring Spacer. This flange is generally a piece of metal than is cut to fit between two pipe flanges and usually sandwiched between two gaskets. A spectacle blind flange is often made from two metal discs that are attached to each other by a small section of steel. The flange shape is similar to a pair of glasses or spectacles, hence it’s called Spectacle Bind Flange. Our Group can supply Spectacle Blind Flange with different type of joint face (RF, FF, RTJ) in series class of 150/300/600/900/1500/2500 in according to dimensional standards ASME B16.48.
ASTM A182 F316L is a standard specification for forged or rolled alloy and stainless steel pipe flanges, fittings, valves, and parts for high-temperature service. A spectacle blind flange is a type of flange that is used to separate or isolate sections of a piping system. It consists of a pair of metal discs that are attached to each other by a central bolt or hinge. The discs can be rotated to either block or allow flow through the pipeline. The ASTM A182 F316L spectacle blind flange is specifically made from grade 316L stainless steel, which is a low-carbon version of 316 stainless steel. This material offers improved corrosion resistance and is often used in applications where welding is required. The spectacle blind flange is commonly used in piping systems where regular maintenance or inspection is required. By simply rotating the discs, the flow of fluid can be easily shut off without the need to remove or disconnect any pipes. This makes it a convenient and practical solution for various industrial applications.
Equivalent Grades:
| GRADE | WERKSTOFF NR./ DIN | UNS | JIS | BS | GOST | AFNOR |
| SS316L | 1.4404 / 1.4435 | S31603 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17 |
Features Of Stainless Steel Spectacle Blind Flanges:
1. Corrosion resistance: ASTM A182 F316L Spectacle Blind Flange is made of stainless steel grade 316L, which is known for its excellent corrosion resistance in a wide range of corrosive environments.
2. High strength: The ASTM A182 F316L Spectacle Blind Flange has high tensile strength, making it suitable for high-pressure and high-temperature applications.
3. Good Durability: Stainless steel grade 316L is known for its durability and long service life, making the ASTM A182 F316L Spectacle Blind Flange a reliable choice for industrial applications.
4. Easy installation: The ASTM A182 F316L Spectacle Blind Flange is easy to install and requires minimal maintenance, reducing downtime and overall costs.
5. Versatility: The ASTM A182 F316L Spectacle Blind Flange is suitable for a wide range of applications in various industries, including oil and gas, petrochemical, chemical, and marine industries.
6. Leak-proof design: The spectacle blind flange design ensures a tight seal, preventing leakage and ensuring the integrity of the piping system.
7. Compliance with standards: The ASTM A182 F316L Spectacle Blind Flange meets ASTM and ASME standards, ensuring quality and performance consistency.
Chemical Composition(%):
| C | Mn | Si | P | S | Cr | Mo | Ni | N |
| 0.10 max | 2.00 max | 0.75 max | 0.045 max | 0.030 max | 16.00-18.00 | 2.00-3.00 | 10.00-14.00 | 0.10 max |
Mechanical Properties:
| Grade | Density | Melting Range | MPa-Psi Tensile Strength | MPa-Psi Yield Strength (0.2%Offset) | Elongation |
| SS316L | 8.0 g/cm3 | 1399 °C (2550 °F) | 75000 Psi(515MPa) | 30000 Psi (205MPa) | 35 % |
Applications:
1. Chemical Processing Industry: ASTM A182 F316L spectacle blind flanges are commonly used in the chemical processing industry for applications such as chemical reactors, distillation columns, and storage tanks. The high corrosion resistance of ASTM A182 F316L makes it suitable for handling a wide range of corrosive chemicals.
2. Petrochemical Industry: Petrochemical plants often use ASTM A182 F316L spectacle blind flanges in various equipment such as heat exchangers, pipelines, and storage tanks. The high temperature and pressure resistance of ASTM A182 F316L make it ideal for these demanding applications.
3. Pharmaceutical Industry: The pharmaceutical industry requires high-quality and hygienic equipment to ensure the safety and purity of pharmaceutical products. ASTM A182 F316L spectacle blind flanges are commonly used in pharmaceutical processing equipment due to their excellent corrosion resistance and easy cleanability.
4. Food and Beverage Industry: ASTM A182 F316L spectacle blind flanges are widely used in the food and beverage industry for applications such as processing equipment, storage tanks, and piping systems. The hygienic properties of ASTM A182 F316L make it suitable for handling food and beverage products safely.
5. Water Treatment Industry: Water treatment plants often use ASTM A182 F316L spectacle blind flanges in various equipment such as pumps, valves, and piping systems. The high corrosion resistance of ASTM A182 F316L ensures the longevity and reliability of water treatment systems.
6. Power Generation Industry: Power plants require high-quality materials for their equipment to withstand high temperatures and pressures. ASTM A182 F316L spectacle blind flanges are commonly used in power generation equipment such as boilers, turbines, and heat exchangers due to their excellent mechanical properties and corrosion resistance.
