
Plumbing
Commercial and industrial maintenance, drainage and underground services, CCTV and jetting, backflow testing and certification, leak detection, water filtration and gasfitting.

We repair burst and leaking fire services on 80 mm, 100 mm and 150 mm mains, and test every repair before the service goes back into operation.

Under nature strips, footpaths and driveways.
Split and cracked pipe, failed joints and fittings, and deteriorated sections of pipe on burst and leaking mains.
Leaking and failed isolation valves, valves that cannot be reached or will not shut off, leaking flanges and gaskets, and damaged hydrant branches and their underground pipework.
Hidden leaks under concrete, asphalt, driveways and landscaping, on underground mains, hydrant branches and hydrant ring mains, found before we dig.

On government housing and facilities, schools, shopping centres, apartments and strata, and commercial and industrial sites.
Leaking and damaged pillar and in-ground hydrants, hydrant valves, failed seals and fittings, and hydrants damaged by vehicles.
Leaking booster valves, inlets and non-return valves, damaged fittings and gauges, and leaks in the pipework between the booster and the main.
Leaking and failed double check and reduced pressure zone assemblies, worn check valves, seals and relief valves, and damaged fittings.


You send through the details of the job or call the office.
We attend site and scope the work in person.
You get a written quote for the work.
We book the work around your operating hours, your inductions and your access requirements.
We hand over with compliance certificates where required.

If you’re looking for an experienced contractor to support your commercial, industrial or government plumbing requirements, tell us about your project below. Our team will review the details and get in touch to discuss how Giant Plumbing can assist.






The usual signs are water coming up through the ground, a loss of pressure in the fire service, and water use that is higher than it should be.
We attend burst fire services outside normal hours, and 1300 159 857 reaches us after hours.
Concrete cutting and difficult access are common on these jobs, and we handle both ourselves.
A burst can expose badly corroded pipework, a poor previous repair or an ageing underground service. Where it does, we quote that work before it starts.
Yes. Other plumbing contractors pass their burst fire service calls to us, and we work directly for property, facility and asset managers.
We repair burst fire services across greater Melbourne and Victoria from our base in Coburg North.

Commercial and industrial maintenance, drainage and underground services, CCTV and jetting, backflow testing and certification, leak detection, water filtration and gasfitting.

Trenching, drainage and stormwater, sewer and site cuts with our own 8 t, 3.5 t and 1.5 t excavators and tip truck. Tight access, demolition and spoil removal.

Commercial, industrial and residential re-roofs, metal roofing, box gutters, flashings and cappings, skylight replacement, wall cladding and roof leak repairs.

Speak with our team to discuss fire service repairs on a single site or across a large property portfolio.

