Open: Monday - Friday: 7:30am - 4pm

Engineering Since 1955

Proudly known as a three-generation company, A.D. McCallum & Son are specialists in precision and general engineering and manufacturing.

Engineering Design

ADM provides market-leading engineering design services through its qualified engineers and designers.

Manufacturing & Installation

Experience and a continued commitment to finding solutions for its customers continue to position ADM at the forefront of the manufacturing/engineering industry.

Maintenance, Servicing & Repairs

ADM delivers precision maintenance and repairs to all types of structural, hydraulic, pneumatic, and mechanical equipment.

Robotic Welding

Introducing ADM’s MA2010 Robot on 3.15m track fitted with Fronius TPS/i 500amp welder.

Sandblasting & Painting

Abrasive blasting and industrial spray painting services

24 hr Emergency Service

Learn more about our 24-7 emergency services. Contact ADM for details

ADM specialise in:



Design, development, manufacturing, testing and certification and repair of Roll Over Protective Systems (ROPS) and Falling Object Protective Systems (FOPS)

Crane & Boom Repairs and Inspections

Grillages, ties, structural modifications, repairs and inspections

Airport Aerobridges Australia-wide

Installation, modifications, repairs and maintenance

No project too big or too small

A.D. McCallum and Son specialise in precision and general engineering and manufacturing in Sydney, New South Wales, Australia.

We offer Australia-wide service providing engineering and manufacturing solutions for ROPS & FOPS, CRANE & BOOM REPAIRS and AIRPORT CONSTRUCTION including AEROBRIDGES on time and on budget.

No matter how tough the request, A.D. McCallum & Son will find the solution!

Our strength is our ability and versatility to adapt to our customers ever changing needs and working environments.


  • Complete 3D CAD design + engineering services
  • Fabrication, welding, profile cutting, machining, line boring, sandblasting/painting, servicing and maintenance
  • 24 hour emergency service

Call: 02 4575 1922

Custom Design.
Custom Built.

Our strength is our ability and versatility to adapt to our customers ever changing needs and working environments.

Client Testimonials

“ADM has been supplying Komatsu Australia engineering solutions for approximately 33 years. They continue to be a company I turn to for solutions when outfitting one of our Komatsu machines for unique and challenging applications.

ADM’s approach to design, fabrication, and certification fits Komatsu Australia’s and our customers’ needs for the highest standards of engineering solutions.”

Peter Vansittart

National Business Manager, Komatsu Australia Pty Ltd

“I have engaged AD McCallum & Son to undertake varied works ranging from certification of aerobridges to refurbishment and maintenance works at the Sydney Airport. The works were completed on time and the quality of workmanship was excellent.

I would recommend AD McCallum & Son to any company that appreciates quality workmanship and value for money.”

Erek Sudhakar

FM HVAC - International Terminal, Sydney Airport

“My businesses have been using AD McCallum & Son for over 20 years because of their manufacturing capabilities, their ability to complete jobs on time and on budget, their sound engineering and their passion for customer service.

Their ‘can do’ attitude and the fact they produce creative solutions which surpass our expectations are the key reasons I will continue to use them into the future.”

Mark Halford

Macey Pty Ltd