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Weld Fitting

Swagelok® Weld Fittings

Swagelok weld fittings provide the consistent strength and longevity needed to maintain fluid system efficiency and safety in ultrahigh-purity, specially cleaned, and industrial applications.

View All Weld Fittings

Swagelok offers a wide selection of weld fittings in various sizes, shapes, and materials for diverse applications. The options include high-purity and general industrial tube butt weld fittings, socket weld fittings, weld adapters, and subsea weld fittings. Miniature Swagelok Micro-Fit® fittings provide the same flow and service ratings as larger fittings in a compact design for tight spaces.

Available in sizes 1/8 to 1 in. and 6 to 18 mm, in 316, 316L, 316L VAR, and 316L VIM-VAR stainless steel materials, tube butt weld fittings are designed for precise alignment and uniform tube walls, while pipe socket weld fittings offer heavy walls for long life in severe conditions. The choice of fitting, pipe, and tubing material being welded is critical. Using the same materials will ensure the same coefficients of expansion and will reduce the possibility of poor welds, out-of-roundness, or dimensional changes that are detrimental to a good weld.

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Weld Fitting Categories

Butt Weld Fittings

Butt Weld Fittings

Butt weld fitting straights, elbows, tees, and crosses feature a precisely finished diameter to match tube diameter and create high-integrity connections.

High-Purity Micro-Fit Tube Butt Weld Fittings

High-Purity Micro-Fit Tube Butt Weld Fittings

Micro-Fit tube butt weld fittings accommodate systems requiring miniaturization while providing flow and service ratings equal to larger weld fittings.

Socket Weld Fittings

Socket Weld Fittings

Precisely machined socket weld fittings ensure proper tube fit and feature a thin wall to reduce weld heat input.

Weld Adapters

Weld Adapters

High-integrity weld adapter fittings provide strength and reliability and meet your requirements for quality and corrosion-resistance.

Weld Rings

Weld Rings

Weld rings are used with tube butt weld fittings to help align weld joints and add material to the weld zone during manual or orbital welding.

Weld Fittings Catalogs

Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.

Fluid system with leak-tight Swagelok<sup>®</sup> tube fittings

The Swagelok® Tube Fitting Advantage

Swagelok tube fittings are designed to meet your highest expectations for safety and dependability, featuring proven design, precise manufacturing, and superior raw materials.

Discover the Advantage

Swagelok Resources Curated for You

Threaded Swagelok tube fittings
An Introduction to Fittings: Identifying Thread Size and Pitch

Even the most seasoned professionals can experience difficulty identifying threads. Swagelok product manager Andy Hitchcock explains how to identify thread size and pitch on your fittings using a caliper, pitch gauge and thread identification guide.

Workers on an oil rig
Optimizing Medium-Pressure Oil and Gas Applications with Compression Fittings

For medium-pressure applications in oil and gas topside assets, learn how compression fittings can offer installation speed and performance benefits over traditional cone and thread connections.

A Shenyang Blower Works employee uses a fluid system built with Swagelok components
How Shenyang Blower Works Group Improved Safety and Reliability

Learn how Swagelok Shanghai has helped Shenyang Blower Works Group Corporation achieve consistency, reliability, and cost savings for its customers while improving its own safety and production efficiency.

Using a gap inspection gauge to confirm proper installation of a Swagelok tube fitting
Swagelok Tube Fitting Installation

This video demonstrates the integral steps for installing Swagelok tube fittings, which have earned a global reputation for consistency, quality, and reliability.

Weld fittings

Weld Fittings

Swagelok offers weld fittings in a variety of materials, sizes, and shapes to suit any industrial or high-purity application. Permanent, high-integrity connections provide strength and reliability in a range of alloys to meet your requirements for quality and corrosion-resistance.

Our selection includes:

  • Micro-Fit® High-Purity Tube Butt Weld Fittings
  • Pipe Socket Weld Fittings
  • Subsea Weld Fittings
  • Tube Butt Weld Automatic Fittings
  • Tube Butt Weld Fittings
  • Tube Socket Weld Automatic Fittings
  • Tube Socket Weld Fittings
  • Weld Adapter Fittings

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