Nepean Building & Infrastructure

NEPEAN Building & Infrastructure is an integrated manufacturer of fabricated metal products and hot-dip galvanising services, supplying the architectural, civil, construction, industrial and mining markets throughout Australia.

Established in 1955 as the Graham Group in Yagoona, NSW, NEPEAN Building & Infrastructure has evolved by providing specialised solutions and support through industrial manufacturing, galvanising facilities, and support branches to service customers nationally, employing over 260 people.

Our Australian and international manufacturing sites are committed to quality, safety and compliance with an integrated quality management system. Facilities hold relevant accreditations for quality ISO 9001, environment ISO 14001 and safety ISO 45001.

The portfolio of specialised and trusted brands include:

Weldlok – Grating, Handrail, Drainage and Architectural Solutions

Weldlok® has proudly serviced the Australian market for more than 60 years, fabricating and supplying steel products to meet infrastructure, industrial, civil and architectural needs.

As design and fabrication specialists, Weldlok produces durable and high-quality grating, handrail, flooring, and drainage solutions, custom-configured to project needs. Weldlok are experts in perforated and expanded metal in unique designs for custom architectural installations.  Our Australian manufacturing facilities enable Weldlok to service customers nationally, with expert teams located in Sydney, Melbourne, Brisbane and Perth.

Committed to quality, safety and compliance, Weldlok facilities hold accreditation for ISO 9001 and maintains certifications for the environment to ISO 14001 and occupational health and safety to ISO 45001.

Weldlok offers a wealth of unrivalled industry experience and partners with clients to develop the right solution for each project, ranging from major mining and infrastructure to smaller-scale independent fabrication.

For more information on products and services, visit

Galintel – Galvanised Steel Lintels and Specialised Building Products

Galintel® has manufactured in Australia for more than 40 years as a trusted supplier of high- quality steel products for the residential building market.

Our Coffs Harbour facility is committed to quality, safety and compliance holding accreditation for ISO 9001. Galintel also maintains certifications for the environment to ISO 14001 and occupational health and safety to ISO 45001.

The range of hot-dip galvanised steel products includes innovative lintels that are strong, durable and safe, along with stair stringers, retaining wall posts and builders posts.

Galintel works extensively with industry stakeholders, with all products undergoing independent testing and appraisal ensuring compliance with the Building Code of Australia and relevant Australian Standards.

To learn more, visit our website at

Galserv – Hot-Dip Galvanising

Proudly servicing Sydney since 1963, Galserv is one of the largest Hot-Dip Galvanisers in Australia and a founding member of the Galvanizers Association of Australia.

Committed to high standards of service and quality, our Yagoona facility is quality accredited to ISO9001:2000. We also hold accreditation for the environment ISO 14001 and safety ISO 45001. Galserv hot-dip galvanised coatings meet Australian Standard AS/NZS 4680:2006.

Our team takes complete ownership of client projects to ensure reliable, efficient, and superior service.  Offering the longest operating hours in Sydney, Galserv provides flexible lead times to meet client deadlines. 

Galserv treatments are suitable for products across construction, infrastructure, fabrication, mining and mineral resources to provide long-lasting corrosion resistance. Galserv also provides integrated solutions for our market-leading products from Galintel® and Weldlok®.