Welcome to Trigg Bros Pty Ltd
Founded in 1925, Trigg Bros Pty Ltd is a family owned and operated business, located in Adelaide, South Australia, specialising in the repetition manufacture of small to medium sized castings in grey iron, ductile iron and alloyed irons (wear resistant).
Our company is certified to ISO9001:2008 and our manufacturing system is centred around automated moulding and induction melting.




In-house capabilities include the preparation of prototype and production tooling, resin coated sand manufacture, shell core production and full spectrographic analysis.
Trigg Bros Pty Ltd can provide an "as cast" casting or castings finished to customer requirements. Some post-processing options are galvanising, powder coating, machining and heat-treating (including ADI - Austempered Ductile Iron).
Our clientele covers every industry sector from agriculture, rail and trailer coupling components, automotive, building, earthmoving, freight & transport, general engineering, hydraulic, power transmission, irrigation and leisure to marine, materials handling, mining, public utilities (electricity, gas and water).
Trigg Brothers Pty Ltd is located in close proximity to all forms of freight transport for the efficient and economical distribution of clients' products to anywhere in Australia, New Zealand or around the world.
Reliable Trailer Couplings & Components
Trigg Bros Pty Ltd couplings are 100% Australian manufactured and comply with AS 4177.3 for caravan and light trailer towing components.
You will find our quality trailer couplings used to tow just about anything from domestic and commercial box trailers to caravans, campervans, boat trailers and off-road equipment.



