As a pioneer and global leader in manufacturing thermowells, we ensure the highest quality and precision in every instrumentation piece we manufacture. Whether they are custom-made for highly specialized measurements or they are standard configuration, each and every Thermowell is built to meet or exceed accepted standards.

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

Our flanged thermowells are also available in a large variety of flange sizes, and configurations that include, but are not limited to, raised face, flat face, and ring type joint.

For details on our Flanged Thermowells, please see our product sheet below.

  • All flanges are welded to Code
  • CRN Approved Thermowells
  • Custom Software for Thermowell Design Calculations
  • Various NDT options
  • NACE compliant

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: Petrochemical industry. On & offshore. Plant construction.

Mac-Weld Thermowell Catalogue

Mac-Weld 2023 Thermowell Catalogue

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

  • Flanged Thermowell 1
  • Flanged Thermowell 2
  • Flanged Thermowell 4
  • Flanged Thermowell 3

We have been using Mac-Weld for over 20 years and find them a true team vendor with quality, a great supplier.

Mary J., OEM manufacturer of Instrumentation

Looking for Flanged Thermowells?