A North American leader in Thermowells and Instrumentation hardware.

Contact Mac-Weld Machining Ltd.

Thank you for your interest in Mac-Weld Machining Ltd’s products and services. We do our best to reply to your response as promptly as possible. Should you need immediate service please give us a call using the phone number provided.below

First name:

Last name:

Email address:

Contact phone number:


WP Google Maps Error

In order for your map to display, please make sure you insert your Google Maps JavaScript API key in the Maps->Settings->Advanced tab.

Our Business Hours

Monday-Friday: 7:30 am – 4:30pm

Canadian Office (Head office)

1324 Lougar Avenue
Sarnia, Ontario  N7S 5N7


(519) 332-1388 or 1-877 622 9353


(519) 332-3280



Our Locations