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Sockolets

Sockolets are branch connection fittings that use a socket-weld design, allowing a plain-end branch pipe to be inserted and fillet welded to the run pipe for secure attachment.

Ideal for small-diameter, high-pressure piping systems, Sockolets are widely used in oil and gas, petrochemical, and power generation industries for reliable branch connections.

Sockolets

Sockolets feature a socket-weld connection where a plain-end branch pipe is inserted into the socket and secured with a fillet weld, while the fitting itself is fillet welded to the run pipe. Unlike Weldolets, which use a butt-weld with beveled ends, Sockolets are designed for smaller pipe sizes and offer ease of installation in high-pressure systems. Their reinforced design minimizes stress concentrations, ensuring strong and durable branch connections suitable for demanding industrial applications.

Key Properties of Sockolets

  • Socket-Weld Design: Enables easy insertion and fillet welding of branch pipes.
  • Stress Reduction: Reinforced structure minimizes stress at the connection.
  • Compact Solution: Ideal for small-diameter, high-pressure piping systems.
  • Versatile Sizing: Available for various pipe schedules and diameters.

Common Standards and Materials

Sockolets are manufactured to meet stringent industry standards, ensuring compatibility and performance in demanding piping systems.

Type/Standard Material Application
Standard Sockolet: MSS SP-97, ASME B16.11 Carbon Steel (A105), Stainless Steel (304/304L, 316/316L) Oil and gas, chemical processing
High-Pressure Sockolet: MSS SP-97 Alloy Steel (A182 F11, F22), Duplex (F51), Inconel 625 Power generation, high-pressure systems

Applications of Sockolets

Sockolets are critical in industries requiring reliable branch connections in small-diameter piping systems:

  • Oil and Gas: Facilitates branch connections in processing facilities and pipelines.
  • Petrochemical: Used in reactors and plants for fluid distribution.
  • Power Generation: Supports steam and water branching in power plants.
  • Chemical Processing: Ensures secure connections in corrosive fluid systems.

Specifications

Properties Values & Limits
Material Carbon Steel (A105), Stainless Steel (304/304L, 316/316L), Alloy Steel (A182 F11, F22), Duplex (F51), Inconel 625
Design Standards MSS SP-97, ASME B16.11
Connection Socket-Weld, Fillet Weld
Size Range 1/8" to 4" (Branch); Up to 36" (Run)
Pressure Rating Up to 6000 PSI (Class 3000, 6000)
Wall Thickness Sch 40 to Sch 160, XS, XXS
Testing Standards ASME B31.3, ASME B16.11

Considerations for Use

  • Welding Quality: Ensure proper fillet welding techniques for joint integrity.
  • Material Compatibility: Match Sockolet material to pipe material to prevent corrosion.
  • Pipe Size: Select Sockolet size to match branch and run pipe specifications.