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Socket Weld Flanges

Socket weld flanges feature a counter-bored bore that accepts the pipe, secured by a fillet weld around the hub, making them ideal for high-pressure systems like hydraulic and steam lines. The bore matches the pipe’s inner diameter, ensuring smooth flow.

These flanges, with optional internal welds for added strength in high-stress applications, are widely used in industries such as oil and gas, chemical processing, and power generation for their reliability and compact design.

Socket Weld Flanges

Socket weld flanges are designed for high-pressure piping systems, resembling slip-on flanges but with a counter-bored bore that accommodates the pipe’s outer diameter. A fillet weld around the hub secures the connection, and an optional internal weld can be added for enhanced durability in demanding conditions. The flange’s bore aligns with the pipe’s inner diameter, minimizing turbulence and ensuring efficient flow, making them suitable for critical applications like steam and hydraulic lines.

Key Properties of Socket Weld Flanges

  • High-Pressure Suitability: Ideal for high-pressure systems due to secure fillet weld.
  • Flow Efficiency: Bore matches pipe’s inner diameter, reducing turbulence.
  • Compact Design: Counter-bored bore allows precise pipe insertion.
  • Optional Reinforcement: Internal weld can be applied for high-stress applications.

Common Grades and Equivalents

Socket weld flanges are manufactured to meet industry standards, ensuring compatibility and performance in high-pressure applications.

Grade/Standard Equivalent Application
ASTM A105, ANSI B16.5 Carbon Steel Oil and gas, steam systems
ASTM A182 F304/F316 Stainless Steel Chemical processing, marine
ASTM A350 LF2 Low-Temperature Carbon Steel Cryogenic pipelines

Applications of Socket Weld Flanges

Socket weld flanges are critical in industries requiring reliable high-pressure connections:

  • Oil and Gas: Used in high-pressure hydraulic and steam lines.
  • Power Generation: Connects steam pipelines in power plants.
  • Chemical Processing: Handles high-pressure fluids in processing systems.
  • Marine Industry: Supports high-pressure piping in ship systems.

Specifications

Properties Values & Limits
Material Carbon Steel, Stainless Steel, Alloy Steel
Standards ASME B16.5, ANSI B16.47, MSS-SP-44
Connection Fillet Weld (Optional Internal Weld)
Size Range 1/2" to 4" (Standard)
Pressure Rating 150#, 300#, 600#, 900#, 1500#, 2500#

Considerations for Use

  • Welding Precision: Ensure proper fillet weld to maintain joint integrity.
  • Material Compatibility: Select materials to match pipe and fluid to prevent corrosion.
  • Size Limitation: Typically used for smaller pipe sizes due to design constraints.