Our story

DKJ Welding Services Limited (DKJ) has proudly and successfully served New Zealand for 30 years, predominantly in the dairy and process pipework industry. Founded in 1991 by three friends and local contractors Darryl, Kevin and John, later purchased by Mike Calnan in 2014 after working for DKJ for 10 years.

Mike takes the hands-on approach to the family run company. Halving time between the office and onsite so you will deal directly with him and one of our key project managers, from initial planning engagement to manufacturing, and site clean-up.


We utilise experienced tradesmen and quality assurance administrators who ensure that all work meets the highest standards.

Knowledge you can trust

Our experience ensures that your project is in safe hands - you can depend on our advice to be unbiased and honest.

Regular Progress meetings

From the first meeting to the finishing touches, we offer regular progress review meetings to ensure you are fully informed each step of the way.

A team of varied expertise

Our team is comprised of estimators, supervisors, health and safety advisors, coordinators and qualified tradesman. 

Safety first

Our priority is to provide a safe & healthy working environment for our team, our clients & the public, so everyone goes home every day unharmed.

About us

Established in the Industrial Engineering and Construction sectors, we specialise in providing a comprehensive range of contract personnel, on a flexible ‘as required’ basis for long or short-term periods, dependent upon your requirements.

Based in Hamilton, we have the resources to mobilize all over New Zealand and serve our clients locally, and nationwide. Our team have established excellent, long-standing relationships within our industry. Working collaboratively with suppliers to eliminate defects from all incoming parts. 

Health & safety, quality workmanship and the environment are at the forefront of everything we do, we go above and beyond to ensure our products and services function the way you need to without compromising our core values.

DKJ are proud sponsors of sports clubs and charities across the Waikato region.

This includes but is not limited to the following: Motocross, Netball, Rugby, Hockey, Soccer, Karate and Special Kids Christmas.