NEPEAN Building & Infrastructure

Contact Details

Head Office

117-153 Rookwood Rd
Yagoona NSW 2199
+61 2 9707 5000
+61 2 9790 6145

ABN  54125224302

Other Locations

Coffs Harbour NSW

Banyo QLD

Derrimut VIC

Belmont WA

Company Profile

NEPEAN Building & Infrastructure is an integrated manufacturer of fabricated metal products and hot-dip galvanising services. Proudly supplying the architectural, civil, construction, industrial and mining markets throughout Australia with our unique hybrid supply chain model. Established in 1955 as the Graham Group in Yagoona, NSW, we have evolved by providing highly specialised solutions and tailored support. Our industrial manufacturing, galvanising facilities, and support branches service customers nationally, employing over 260 highly skilled individuals. Our Australian and international manufacturing sites are committed to quality, safety and compliance with an integrated quality management system. Facilities hold relevant accreditation for quality ISO 9001:2015, environment ISO 14001:2015 and safety ISO 45001:2018.

Products and Services

Access Covers
Aluminium Grating
Aluminium Handrail Systems
Building Lintels
Drainage Grates
Expanded Metals
Flat Bar
FRP Grating
FRP Handrail Systems
Galv Handrail Systems
Hot-Dip Galvanising
Perforated Metals
Stainless Steel Grating
Stainless Steel Handrail Systems
Stair Stringers
Steel Grating
Safety and Access Solutions
Residential Building Products


ISO 9001:2015 Quality System
ISO 14001:2015 Environmental System
ISO 45001:2018 Safety System
Master Builders Association
Australian Steel Institute - Sustainability Charter - Platnium
Galvanisers Association
NATA Accredited Laboratory - ISO/IEC 17025 - #12043
SAI Global 3rd party product approvals to AS3996-2019 (certificate SMK40898)
WSAA appraisal (PA-2046)
Weldlok currently hold the below authority approvals
Sydney Water
Icon Water
Hunter Water
City West Water (MLB)
SEQ (South East QLD)
QUU (Queensland Urban Utility)
Unity Water
TMR QLD (Transport & Main Roads)