Carbon Steel Socket Weld Flange

A Carbon Steel Socket Weld Flange is designed for high-pressure piping systems and small-diameter pipes. It features a socket-like bore where the pipe is inserted before welding, ensuring a strong and leak-proof connection. These flanges are commonly used in pipelines handling high-pressure steam, gas, and hazardous fluids in industries such as oil & gas, power plants, and chemical processing.

Specifications & Features:

Material Grades:

• ASTM A105 – Standard forged carbon steel
• ASTM A350 LF2 – Low-temperature carbon steel
• ASTM A516 Gr. 70 – Pressure vessel quality steel
• ASTM A694 – High-yield strength carbon steel for high-pressure applications

Design & Standards:

• ANSI / ASME B16.5 – Pipe flanges up to 24 inches
• ANSI / ASME B16.47 – Large diameter flanges
• MSS SP-44, API 605, DIN, EN, JIS, BS, GOST, IS – Available per international standards

Size & Pressure Ratings:

• Nominal Pipe Size (NPS): 1/2″ to 24″
• Pressure Ratings:
  • Class 150
  • Class 300
  • Class 400
  • Class 600
  • Class 900
  • Class 1500
  • Class 2500
  • PN6, PN10, PN16, PN25, PN40, PN64

Flange Face Types:

• Raised Face (RF) – Standard for high-pressure applications
• Flat Face (FF) – Used for lower-pressure applications
• Ring Type Joint (RTJ) – For extreme pressure and temperature applications

Key Features & Benefits:

• Socket-Type Bore – Pipe fits inside the flange, ensuring easy alignment before welding
• Single Fillet Weld – Simple welding process, reducing welding time and cost
• Leak-Proof Connection – Ideal for high-pressure pipelines
• Compact & Strong – Suitable for small-diameter, high-pressure piping
• Enhanced Fatigue Strength – Resists bending and stress cracking

Applications:

• Oil & Gas Industry – High-pressure fluid and gas transportation
• Petrochemical & Chemical Plants – Corrosive fluid handling systems
• Power Plants – Steam, water, and gas distribution pipelines
• Pharmaceutical & Food Processing – Hygienic piping systems
• Marine & Shipbuilding – Seawater and offshore pipelines

Surface Treatment Options:

• Black Painted – Protects against rust during storage and transport
• Hot-Dip Galvanized (HDG) – Ensures corrosion resistance in harsh environments
• Anti-Rust Oil Coated – Prevents oxidation during shipping and handling
• Electroplated Zinc Coating – Provides additional protection against wear

Advantages Over Other Flange Types:

• Stronger than Slip-On Flanges – Suitable for high-pressure applications
• Less Welding Required than Weld Neck Flanges – Reduces installation time
• Leak-Proof Connection – Ideal for hazardous and pressurized fluids
• Compact Design – Saves space in piping layouts