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Auckland Structural Steel Fabricators · Est. 1995

Structural steel,
fabricated on site — or in our Hobsonville workshop.

Black Steel Mobile is Auckland’s SFC Level 3 certified structural steel fabricator. A fleet of fully self-contained mobile workshops measures, cuts, welds and installs to your build — eliminating off-spec deliveries and crane wait times.

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SFC Certified Fabricator
Certified
SFC Level 3
Site Safe NZ Member
Member
Site Safe NZ
SCNZ Member
Member
SCNZ
HERA Member
Member
HERA
25+
Years fabricating in Auckland (est. 1995)
Level 3
SFC Certified Fabricator — highest available
6
SCNZ Excellence in Steel award entries
Greater Auckland
Mobile fleet service area
Our Approach

A trusted Auckland fabricator — built around certainty of product.

Black Steel Mobile Ltd has been operating for over 25 years as Auckland’s trusted specialists in structural steel beam fabrication for residential buildings and earthquake strengthening projects. We were purchased in 2020 by Managing Director Fatu Fuatavai — who holds university degrees in Science and Engineering and brings extensive experience across the engineering and building industries.

From our modern Hobsonville workshop we deploy a fleet of fully self-contained mobile workshops across the Greater Auckland region. Every project benefits from SFC Level 3 fabrication, current Site Safe passports across the team, and an International Welding Inspector (B) on staff.

Black Steel is affiliated with SCNZ, HERA, the Sustainable Steel Council and Amotai — signalling our commitment to quality, safety, sustainability and inclusive procurement.

“Quality and good value are at the core of everything we do.”

Fatu Fuatavai — Managing Director (company statement)

Save time

Steel is cut on-site and installed immediately — the installation is accurate and ready when your trade is.

Save money

Contractors don’t wait around for a truck and crane to arrive with pre-fabricated steel.

Save hassle

Many builders know the frustration of a vital steel component arriving cut wrong. We measure, cut and install on the job.

Save risk

SFC Level 3 fabrication delivers certainty of product and significantly reduced compliance risk for procurers.

Quick facts
Founded
1995
Workshop
1 Rawiri Place, Hobsonville, Auckland 0618
Service area
Greater Auckland (mobile fleet coverage)
Hours
Mon–Thu 7:00–17:00 · Fri 7:00–16:00
Quote turnaround
Approx. 1 week from plan review — urgency accommodated
Capabilities

Six fabrication services, two delivery modes.

From structural steel beams for new builds to bespoke architectural features and earthquake strengthening — delivered either on site by our mobile workshops or in our Hobsonville factory.

01 Service

Mobile & On-Site Steel Fabrication

Our fleet of fully self-contained fabrication workshops brings the full workshop to the job site across the Greater Auckland region. On-site capabilities include measuring, steel cutting, drilling, bending, punching, welding and complete installation — eliminating the risk of off-spec components arriving on site.

  • ■On-site structural steel cutting and installation
  • ■On-site welding (MIG, TIG, ARC)
  • ■Steel beam, column and channel fabrication on site
  • ■One-off metal designs and welding
  • ■Steel staircases and spiral staircases
  • ■Handrails and balustrades
  • ■Steel repair jobs
Black Steel mobile fabrication workshop on site in Auckland
Black Steel factory engineering workshop in Hobsonville Auckland
02 Service

Factory Engineering

Our large, modern fabrication workshop in Hobsonville handles projects that exceed on-site size limitations, complex structural work, and high-precision architectural fabrication — backed by quality-assurance systems for accuracy and delivery.

  • ■Structural steel fabrication and supply
  • ■Factory welding and metal fabrication
  • ■Hiab delivery service
  • ■Full site installation with qualified tradespeople
  • ■Quality assurance with 5-point inspection process
03 Service

Structural Steel Supply & Installation

Fabricates, supplies and installs structural steel for residential construction, light commercial projects, renovations and earthquake strengthening. All materials meet New Zealand Building Code standards.

  • ■Universal Beams (UBs) — 150UB14 to 310UB46
  • ■Parallel & Tapered Flanged Channels — 50TFC to 380PFC
  • ■Steel columns (RHS, angles)
  • ■New house structural steel framing
  • ■Renovations and additions
  • ■Earthquake strengthening of residential buildings
  • ■Light commercial construction
04 Service

Architectural Steel Fabrication

Custom, one-off architectural steel designs for architecturally designed homes and commercial fitouts — bespoke features with high-quality finishes.

  • ■Steel building facade features
  • ■Stairwells and staircases (including spiral)
  • ■Gates and entranceways
  • ■Balustrades, railings and screens
  • ■Irregular rooflines and structural features
  • ■Corten (weathering) steel decorative designs
  • ■Sculptural steel features
  • ■Bollards (fixed or removable)
  • ■Wire racking and metal shelving
05 Service

Metal Fabrication

Custom metal fabrication for residential and light commercial projects — delivered via our mobile workshops or the Hobsonville factory. Structural and decorative metalwork.

  • ■Custom doors, stairs, handrails, gates and features
  • ■Lintels, t-bars, pergolas, carports
  • ■House beams, flitch plates, posts and platforms
  • ■Portable and fixed bollards
  • ■Decorative and sculptural metal pieces
06 Service

Welding Services

Structural steel welding for residential, light commercial and industrial projects. Certified welders with an International Welding Inspector (B) on staff. Mobile on-site welding across Greater Auckland.

  • ■Structural steel welding
  • ■MIG welding
  • ■TIG welding
  • ■ARC welding
  • ■On-site and mobile welding
  • ■Steel repair welding
  • ■Structural fabrication
Selected Projects

A portfolio of award-recognised residential steel.

A selection of recent fabrications across Auckland — new homes, architectural showpieces, earthquake strengthening and commercial conversions. Multiple entries have been recognised in the SCNZ Excellence in Steel Awards.

Structural steel installation for Mill Flat Road residential home, Auckland
Residential

Mill Flat Rd Home

Residential structural steel fabrication for a new-build Auckland home.
Architecturally designed cliff-top home steel structure, Bournemouth Terrace Murray's Bay Auckland
Architectural

Bournemouth Terrace

Cliff-top architecturally designed home, Murray’s Bay — architectural steel structure.
14-metre steel span beam installation, Southern Cross Road Kohimarama Auckland
Major span

Southern Cross Rd, Kohimarama

14-metre steel span beam installation — significant residential engineering.

Project register

12 notable projects · including SCNZ award entries
  • Orakei Basin Home, Tuhaere Street
    21T steel · ~$265K value · Sept 2022
    SCNZ Winner 2023
  • Kohimarama Home, Berowald Place
    22.5T steel · ~$350K value · Dec 2022
    SCNZ Finalist 2023
  • Surfboard Beach House
    45T steel · ~$650K value · May 2022
    SCNZ Finalist 2024
  • Barry’s Point Road Earthquake Strengthening
    11.6T steel · ~$275K value · Jul 2021
    SCNZ Merit 2022
  • College Hill Residential-to-Commercial Conversion
    16T steel · Jul 2021
    SCNZ Finalist
  • The Long House
    6T steel · ~$100K value · Apr 2022
    SCNZ Finalist
  • Clifftop Architecturally Designed Home, Waiheke Island
    Architectural steel roof supports
    Architectural
  • North Road, Clevedon
    Structural steel, residential
    Residential
  • Tamaki Drive Steel Canopy
    Steel canopy installation
    Commercial
  • Takapuna Beach Front Seismic Fitout
    Seismic structural steel
    Seismic
  • Hobson Street Historic Building Renovation
    Steel structures for historic building renovation
    Heritage
  • SCNZ Apprentice of the Year Finalists
    Kelekolio Setefano and Cameron Bone — 2024 entries
    SCNZ 2024
In Our Words

Company statements — the principles we operate by.

These are internal company statements from our leadership — not external client testimonials.

“Quality and good value are at the core of everything we do.”

Fatu Fuatavai — Managing Director

“Save time — because the steel is cut on-site and installed immediately, the installation is going to be accurate and immediate.”

Black Steel Mobile — on the mobile workshop advantage

“Save money — your contractors don’t have to wait around for a truck and crane to arrive with the pre-fabricated steel.”

Black Steel Mobile — on cost-of-delay

“Save hassle — many builders will know the frustration of having a steel component vital to the completion of a project arrive, only to find it’s cut wrong.”

Black Steel Mobile — on certainty of fit
Quality, Safety & Inclusion

Sixteen credentials backing every project.

Certifications and memberships are not decoration. They’re the framework that delivers certainty of product, lowers compliance risk, and protects every person on the job site.

SFC Certified Structural Steel Fabricator
SFC Level 3
Highest available
Steel Construction New Zealand
SCNZ Member
Steel Construction NZ
Heavy Engineering Research Association
HERA Member
Heavy Engineering Research Assoc.
Site Safe NZ Member
Site Safe NZ
All staff passported
Amotai Registered Supplier
Amotai Supplier
Diversity certification
  • ✓SFC Level 3 Certified Structural Steel Fabricator — highest available level (SCNZ/HERA Structural Fabrication Certification scheme)
  • ✓SCNZ Member — Steel Construction New Zealand
  • ✓HERA Member — Heavy Engineering Research Association
  • ✓Sustainable Steel Council (SSC) Member
  • ✓Site Safe New Zealand — all staff hold current Site Safe passports (Advanced, Construction, and Contractor Management levels)
  • ✓HazardCo Member — industry-specific health and safety resources
  • ✓International Welding Inspector (B) certified employee on staff
  • ✓Amotai Registered Supplier — diversity and inclusion certification
  • ✓SCNZ Awards 2023 Winner — Excellence in Steel: Orakei Basin Home
  • ✓SCNZ Awards 2023 Finalist — Excellence in Steel: Kohimarama Home
  • ✓SCNZ Awards 2024 Finalist — Excellence in Steel: Surfboard Beach House
  • ✓SCNZ Awards 2024 Apprentice of the Year Finalists — Kelekolio Setefano and Cameron Bone
  • ✓SCNZ Awards 2022 Merit — Earthquake Strengthening: Barry’s Point Road
  • ✓Full-time qualified Health and Safety Representative on staff
  • ✓Fully documented Competency Register maintained
  • ✓Pre-start site-specific safety planning — on every project, plus monthly safety-focused team meetings
Leadership

Experienced operators at the helm.

Black Steel Mobile is led by a Managing Director with formal engineering credentials and a General Manager whose tenure spans more than two decades on the workshop floor.

FF

Fatu Fuatavai

Managing Director

BSc (Science) · BE (Engineering)

Purchased Black Steel Mobile in 2020. Holds university degrees in Science and Engineering with extensive experience in engineering and building industries. Previous roles include positions at Angus Construction and Wilkins and Davies, plus experience as a self-employed property developer.

Former Chairman of the New Zealand/Samoa Trade Commission and President of the Hospitality Association (Counties Manukau Branch).

Contact the MD
SP

Stephen Powell

General Manager

Senior Operations · Health & Safety

Has held senior operations and health and safety roles at Black Steel since 2003. Strong industry knowledge. Works closely with technical team members to solve complex technical and practical challenges on structural steel installations.

Invited by HERA to share insights on labour and skills shortage challenges in the industry.

Emergency: 027 676 8716
In Our Community

Supporting Auckland, on and off the worksite.

As Amotai-registered suppliers and active contributors to Auckland causes, Black Steel believes the company is part of the city we’ve fabricated in for three decades.

  • Auckland Rescue Helicopter Trust

    Long-standing supporter of ARHT.

  • Birkenhead United AFC

    Sponsor of The Black Steel Cup (10th-grade sportsmanship award). Funded senior canopy and pitch railing.

  • Auckland Special Children’s Christmas Party

    Annual contributor.

  • Mercy Hospice

    Community partner.

  • Master Builders Auckland Golf Day

    Industry sponsor supporting the Auckland building community.

Get In Touch

Request a quote from Auckland’s SFC Level 3 fabricator.

Plan review to quote typically takes about a week. Urgency accommodated — call us if your project is time-critical.

Hobsonville Factory & Workshop

1 Rawiri Place, Hobsonville, Auckland 0618

Phone
0800 278 335
(09) 414 6677
Emergency
027 676 8716 Stephen Powell, General Manager
Email
info [at] blacksteel dot co dot nz
Hours
Monday–Thursday 7:00–17:00
Friday 7:00–16:00
Postal
P.O. Box 300-022,
Albany 0752, Auckland
Service area
Greater Auckland region — mobile fleet
Call 0800 278 335 Get directions

Request a quote

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Call 0800 278 335 Request quote