Recommend Products
Name: Xiamen Stainless Steel Flange Material: Stainless Steel Standard: ANSI B16.5 Size: 1/2 to 24 Inch Pressure: 150LB to 2500LB Process Method: Forged Type: SO/ WN/ BL Usage: Used in the Fields of Construction, Chemical Engineering, Petroleum and Natural Gas.QS Flange: Xiamen Stainless Steel Flange
Name: Butt Weld Flange Standard: ASME B16.5 Material: Carbon Steel Pressure: 150LB to 2500LB Size: 1/2 to 24 Inch Process Method: Forged Face: RF Usage: Used in the Fields of Construction, Chemical Engineering, Petroleum and Natural Gas.QS Flange: Butt Weld Flange
Name: Pipe Floor Flange Material: Carbon Steel Standard: ASME B16.5 Pressure: 150LB to 2500LB Size: 1/2 to 24 Inch Process Method: Forged Face: RF Usage: Commonly Used in Water Systems, Oil and Gas pipelinesQS Flange: Pipe Floor Flange
Name: ASME B16.5 Blank Flange Type: BL Face: RF Standard: ASME B16.5 Process Method: Forged Material: Carbon Steel Pressure: 150LB Size: 1/2 to 24 Inch Usage: Commonly Used in Water Systems, Oil and Gas pipelinesQS Flange: ASME B16.5 Blank Flange
SS 321 Slip On Flange
QS: Carbon Steel Blind Flange
Name: Carbon Steel Blind Flange
Material: Carbon Steel
Manufacture Standard: ASME B16.5
Face: Raised Face
Class: 300LB
Size: 1/2 to 24 inch
Process: Forged Steel Flange
Coating: with Black Anti-rust Coating
Feature: Strong Stiffness, Good Sealing
Usage: For Pipeline fittings, Industry, Pressure vessels, Water conservancy, Electricity, power stations, etc
Material: Carbon Steel
Manufacture Standard: ASME B16.5
Face: Raised Face
Class: 300LB
Size: 1/2 to 24 inch
Process: Forged Steel Flange
Coating: with Black Anti-rust Coating
Feature: Strong Stiffness, Good Sealing
Usage: For Pipeline fittings, Industry, Pressure vessels, Water conservancy, Electricity, power stations, etc
Quantity
The Carbon Steel Blind Flange is manufactured using high-quality carbon steel materials and strictly adheres to the ASME B16.5 standard, ensuring high precision and reliability. The flange features a Raised Face (RF) sealing surface and is suitable for Class 300LB pressure ratings, with size ranges covering 1/2 inch to 24 inches, meeting the needs of various pipeline systems. The product is manufactured using forging processes, offering high strength, rigidity, and excellent sealing performance. The surface is treated with a black anti-rust coating, effectively extending its service life. Carbon Steel Blind Flanges are widely used in pipeline fittings, industrial equipment, pressure vessels, water conservancy projects, power plants, and other fields, making them an ideal choice for pipeline isolation and sealing. With a simple structure and easy installation, they ensure the safety and sealing integrity of pipeline systems, serving as indispensable components in industrial applications.
I. Product Overview
The Blind Flange, also known as a Blank Flange or End Cap Flange, is a type of flange used to seal the end of a pipeline. Its primary function is to isolate pipeline systems, facilitating inspection, cleaning, or temporary sealing. Carbon Steel Blind Flanges are typically installed at the ends of pipelines or sections requiring isolation, ensuring the safety and sealing integrity of the pipeline system. Due to their simple structure and easy installation, Carbon Steel Blind Flanges are widely used in industries such as petrochemicals, power generation, and shipbuilding.
The Blind Flange, also known as a Blank Flange or End Cap Flange, is a type of flange used to seal the end of a pipeline. Its primary function is to isolate pipeline systems, facilitating inspection, cleaning, or temporary sealing. Carbon Steel Blind Flanges are typically installed at the ends of pipelines or sections requiring isolation, ensuring the safety and sealing integrity of the pipeline system. Due to their simple structure and easy installation, Carbon Steel Blind Flanges are widely used in industries such as petrochemicals, power generation, and shipbuilding.
II. Structure and Features
1. Structure:
- The Carbon Steel Blind Flange is a solid disc without a center hole, with a slightly greater thickness than standard flanges to ensure strength and sealing performance.
1. Structure:
- The Carbon Steel Blind Flange is a solid disc without a center hole, with a slightly greater thickness than standard flanges to ensure strength and sealing performance.
- The flange surface is machined with sealing faces (e.g., Raised Face RF, Flat Face FF, Ring Type Joint RTJ) to match the sealing requirements of the pipeline system.
2. Features:
- Excellent Sealing Performance: Carbon Steel Blind Flanges are connected to mating flanges using bolts and sealing gaskets (e.g., rubber gaskets, spiral wound gaskets), ensuring reliable sealing.
- Excellent Sealing Performance: Carbon Steel Blind Flanges are connected to mating flanges using bolts and sealing gaskets (e.g., rubber gaskets, spiral wound gaskets), ensuring reliable sealing.
- High Strength: Carbon Steel Blind Flanges are typically manufactured using forging or casting processes, offering high compressive and tensile strength.
- Easy Installation: Carbon Steel Blind Flanges do not require welding and can be directly connected to pipeline flanges using bolts, enabling quick installation and removal.
- Cost-Effective: Carbon Steel Blind Flanges are economical and suitable for both temporary sealing and long-term isolation applications.
III. Materials and Manufacturing Processes
1. Common Materials:
- Carbon Steel: A105, Q235, 20# steel, etc., suitable for general working conditions.
1. Common Materials:
- Carbon Steel: A105, Q235, 20# steel, etc., suitable for general working conditions.
- Stainless Steel: 304, 316, 316L, etc., suitable for corrosive media.
- Alloy Steel: F11, F22, etc., suitable for high-temperature and high-pressure environments.
2. Manufacturing Processes:
- Forging: Formed through forging processes, offering high strength and density, suitable for high-pressure and high-temperature applications.
- Forging: Formed through forging processes, offering high strength and density, suitable for high-pressure and high-temperature applications.
- Casting: Formed through casting processes, cost-effective, suitable for low-pressure and non-critical applications.
- Cutting: Made by cutting thick steel plates, suitable for large-diameter and low-pressure applications.
- Cutting: Made by cutting thick steel plates, suitable for large-diameter and low-pressure applications.
IV. Technical Parameters
1. Pressure Rating Range:
- PN6-PN420 (European Standard)
- Class 150-Class 2500 (American Standard)
1. Pressure Rating Range:
- PN6-PN420 (European Standard)
- Class 150-Class 2500 (American Standard)
2. Size Range:
- Nominal Diameter (DN): DN15-DN3000 (or 1/2"-120").
- Thickness: Determined by nominal pressure and diameter, typically ranging from 6mm to 100mm.
- Nominal Diameter (DN): DN15-DN3000 (or 1/2"-120").
- Thickness: Determined by nominal pressure and diameter, typically ranging from 6mm to 100mm.
3. Temperature Range:
- Carbon Steel Blind Flange: -20℃ to +450℃.
- Stainless Steel Blind Flange: -196℃ to +800℃.
- Carbon Steel Blind Flange: -20℃ to +450℃.
- Stainless Steel Blind Flange: -196℃ to +800℃.
4. Sealing Face Types:
- Raised Face (RF): Suitable for general working conditions.
- Flat Face (FF): Suitable for low-pressure and non-critical applications.
- Ring Type Joint (RTJ): Suitable for high-pressure and high-temperature applications.
- Raised Face (RF): Suitable for general working conditions.
- Flat Face (FF): Suitable for low-pressure and non-critical applications.
- Ring Type Joint (RTJ): Suitable for high-pressure and high-temperature applications.
V. Application Fields
1. Petrochemical Industry:
- Carbon Steel Blind Flanges are used to seal pipeline systems for crude oil, natural gas, and chemical media, facilitating inspection and isolation.
1. Petrochemical Industry:
- Carbon Steel Blind Flanges are used to seal pipeline systems for crude oil, natural gas, and chemical media, facilitating inspection and isolation.
2. Power Industry:
- Carbon Steel Blind Flanges are used in pipeline systems for boilers, steam turbines, and other equipment, ensuring safe operation.
- Carbon Steel Blind Flanges are used in pipeline systems for boilers, steam turbines, and other equipment, ensuring safe operation.
3. Shipbuilding Industry:
- Carbon Steel Blind Flanges are used in ship pipeline systems, facilitating maintenance and inspection.
- Carbon Steel Blind Flanges are used in ship pipeline systems, facilitating maintenance and inspection.
4. Construction Industry:
- Carbon Steel Blind Flanges are used in water supply, drainage, and HVAC pipeline systems, ensuring system sealing integrity.
- Carbon Steel Blind Flanges are used in water supply, drainage, and HVAC pipeline systems, ensuring system sealing integrity.
5. Food and Pharmaceutical Industry:
- Used in sanitary pipeline systems for transporting food and pharmaceuticals (stainless steel blind flanges are recommended).
- Used in sanitary pipeline systems for transporting food and pharmaceuticals (stainless steel blind flanges are recommended).
VI. Selection and Installation
1. Selection Recommendations:
- Select the appropriate pressure rating, material, and sealing face type based on the design pressure, temperature, and media characteristics of the pipeline system.
- For corrosive media, stainless steel blind flanges or surface treatments are recommended.
- For high-pressure and high-temperature environments, forged Carbon Steel Blind Flanges are recommended.
1. Selection Recommendations:
- Select the appropriate pressure rating, material, and sealing face type based on the design pressure, temperature, and media characteristics of the pipeline system.
- For corrosive media, stainless steel blind flanges or surface treatments are recommended.
- For high-pressure and high-temperature environments, forged Carbon Steel Blind Flanges are recommended.
2. Installation Notes:
- Ensure the sealing surfaces of the Carbon Steel Blind Flange and mating flange are clean, flat, and free from scratches or defects.
- Select the appropriate sealing gasket (e.g., rubber gasket, spiral wound gasket) and install it correctly.
- Tighten bolts evenly to the specified torque to ensure sealing performance.
- Ensure the sealing surfaces of the Carbon Steel Blind Flange and mating flange are clean, flat, and free from scratches or defects.
- Select the appropriate sealing gasket (e.g., rubber gasket, spiral wound gasket) and install it correctly.
- Tighten bolts evenly to the specified torque to ensure sealing performance.
VII. Surface Treatment
To enhance the corrosion resistance and service life of Carbon Steel Blind Flanges, the following surface treatments are typically applied:
To enhance the corrosion resistance and service life of Carbon Steel Blind Flanges, the following surface treatments are typically applied:
1. Galvanizing:
- A zinc layer is formed on the flange surface through hot-dip galvanizing or electro-galvanizing processes, effectively preventing rust.
- Zinc layer thickness: ≥65μm (hot-dip galvanizing).
- A zinc layer is formed on the flange surface through hot-dip galvanizing or electro-galvanizing processes, effectively preventing rust.
- Zinc layer thickness: ≥65μm (hot-dip galvanizing).
2. Painting:
- Anti-rust paint or epoxy resin is applied to the flange surface, suitable for general corrosive environments.
- Coating thickness: ≥100μm.
- Anti-rust paint or epoxy resin is applied to the flange surface, suitable for general corrosive environments.
- Coating thickness: ≥100μm.
3. Sandblasting:
- The surface is treated with sandblasting to remove oxide layers and impurities, improving surface roughness for subsequent coating.
- The surface is treated with sandblasting to remove oxide layers and impurities, improving surface roughness for subsequent coating.
Conclusion
The Carbon Steel Blind Flange, as a critical pipeline fitting, is widely used in various industrial pipeline systems due to its excellent sealing performance, high strength, and easy installation. Through proper selection, correct installation, and appropriate surface treatments, Carbon Steel Blind Flanges ensure the safe and reliable operation of pipeline systems while extending their service life.
The Carbon Steel Blind Flange, as a critical pipeline fitting, is widely used in various industrial pipeline systems due to its excellent sealing performance, high strength, and easy installation. Through proper selection, correct installation, and appropriate surface treatments, Carbon Steel Blind Flanges ensure the safe and reliable operation of pipeline systems while extending their service life.
Send Message
