Threaded Thermowells

Mac-Weld manufactures threaded thermowells in a wide variety of process thread sizes and configurations which include, but are not limited to, NPT, NPS, and BSPT.

Our threaded thermowells are designed and manufactured 100% in-house, and are made to accept standard and custom made thermometers, thermocouples, bulbs and RTD’s.

For details on our Threaded Tapered, Threaded Straight and Threaded Stepped Thermowells, please see our product breakdown PDF below.

  • Standard Threaded Thermowells available from stock
  • Custom software for Thermowell design calculations
  • CRN approved Thermowells
  • Various NDT options
  • NACE compliant

Mac-Weld is a pioneer and global leader in the manufacturing of Thermowells, and have consistently offered the highest quality and precision in every piece that has left our plants. Whether made to order, or standard configurations, all our products meet or exceed accepted standards.

Material Options: 316 Stainless Steel, 304 Stainless Steel, Carbon Steel, 310 Stainless Steel, 321 Stainless Steel, 347 Stainless Steel, Alloy 20, C-276, Duplex, Incoloy 800, Inconel 600, Inconel 625, Inconel 825, Monel 400, and Titanium (More available upon request)

Industries: Chemical industry. Process technology. Apparatus construction.

Mac-Weld 2022 Thermowell Catalogue

Available in a variety of styles, sizes and materials, see our catalogue for more details.

Our machining process includes ISO and LEAN principals, our CNC machines are always updated for maximum efficiency

Deane Clark, Production Manager, Mac-Weld

See factory for details