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:
ROPS and FOPS
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.
WE ALSO OFFER GENERAL ENGINEERING SERVICES AND ON-SITE WORK INCLUDING:
- 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.”
“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.”
“This is one of the most capable and respected fabrication workshops around.”

























