A North American leader in Thermowells and Instrumentation hardware.

Built on a tradition of exceeding quality at every step.

Mac-Weld is a privately owned North American company that has been in business for over 40 years. We are an ISO 9001:2015 QMS certified company.

We are an industry leader in the manufacturing of Thermowells, Orifice Plates and other instrument components, and we work with various alloys to machine parts on the latest CNC equipment.

Our experienced team collaborates with our clients to develop the highest quality products designed and developed around specific requirements. We always stick to our delivery schedules and supply our products at competitive prices.

We work with our global client base to provide blanket requests as well as specialty welding and machining requests to meet the ever-changing needs of our customers.