Capability

Structural steel fabrication in Singapore

Fabrication and erection of structural steel frames, trusses and members for buildings, bridges and industrial plants. Work covers cutting, welding, drilling and surface protection to structural drawings, then site erection. Buyers assess welding certification, coating systems and capacity against project tonnage and steel grade.

A buyer commissioning structural steelwork in Singapore reads a fabricator on five things, in order: fabrication-yard capacity (tonnes per year, and whether the yard is in Singapore, Johor or both); BCA standing — registration as a licensed Specialist Builder (Structural Steelwork) alongside the General Building grade, the credential that gates public-sector and large-private work; welding and fabrication accreditation — coded welders, in-house NDT, and increasingly SS EN 1090 execution-class certification administered through the Singapore Structural Steel Society (SSSS); erection and heavy-lift capability on site, not just shop fabrication; and a track record on the reference jobs that prove tonnage and tolerance — stadia, airport terminals, and heavy industrial/petrochemical plant. The word "fabricator" spans a wide range, from 5,000-tonne-a-year specialist shops to regional multi-disciplinary contractors that design, detail, fabricate and erect; the credible ones publish a real accreditation, a real yard and named landmark projects rather than a stock-photo gallery.

The shape of the field is a short head and a long tail. At the top sit two SGX-listed names — Yongnam Holdings and TTJ Holdings — that combine large fabrication yards with in-house erection and regional reach, and Yongnam is additionally the region's dominant supplier of reusable steel struts for deep excavations (ERSS), a distinct sub-market from building steel. Below them are established privately-held fabricators (Kim Seng Heng, Steelmech, Sin Hong Seng, Anderco, Hoe Hoe, Zhang Steel) and a cluster of strutting / temporary-works specialists (Kian Hock, Kori, Antara Koh) whose steel goes underground rather than up. Landmark reference projects recur across the sector's marketing — the Changi Airport terminals and Jewel Changi, the Singapore Sports Hub / National Stadium, and Marina Bay Sands. Two structural shifts matter: BCA's DfMA agenda actively pushes structural steel as a productivity-raising offsite method, expanding demand; and at the architectural top end mass-engineered timber (MET) now competes with steel for mid-rise and feature roofs, a substitution buyers increasingly weigh.

Also known as: structural steelwork · steel structures · steel fabrication and erection · structural steel contractor

Capability specifications

Materials: Mild and high-tensile steel (S275, S355), stainless steel sections
Processes: Cutting, drilling, welding (MIG/MAG, SAW), bolting, erection
Standards: EN 1090 (execution class EXC1–EXC4), ISO 3834 welding quality
Coatings: Hot-dip galvanising, intumescent fire protection, epoxy paint
Welder qualification: ISO 9606 / ASME IX

Companies with this capability in Singapore

Yongnam Holdings
A leading Singapore-based multi-discipline structural-steel and specialist-civil contractor covering engineering coordination, detailing, fabrication and erection across Singapore, Malaysia, Thailand and Hong Kong, and the region's dominant supplier of reusable steel struts for ERSS and deep excavation. Reference work spans aircraft hangars, high-rise, MRT and airport infrastructure.
Website (opens Yongnam Holdings in a new tab)
TTJ Holdings (TTJ Design & Engineering)
One of Singapore's largest structural-steel fabricators and erectors, with factories in Singapore and Malaysia; scope covers heavy roof trusses, high-rise and petrochemical structures, launching girders for bridges, defence bomb-shelter doors and offshore-marine shiplift platforms.
Website (opens TTJ Holdings (TTJ Design & Engineering) in a new tab)
Kim Seng Heng Engineering Construction
An established Singapore engineering-construction firm active in process-plant and petrochemical work relevant to tank-farm mechanical construction.
Kori Holdings
An SGX Catalist-listed, BCA-registered licensed Specialist Builder in structural steelworks (steel struts for excavation) and in piling works, ground support and ERSS, plus tunnelling and TBM support. A strong niche in strutting and earth-retaining systems for deep-excavation and MRT works.
Website (opens Kori Holdings in a new tab)
Kian Hock Engineering
A leading Singapore temporary-works and ERSS contractor: sheetpile, soldier pile, strutting, ground anchors and access platforms for deep excavation. Reference projects include the National Stadium, Marina Coastal Expressway, Havelock Station and the East-West Transmission Cable Tunnel.
Website (opens Kian Hock Engineering in a new tab)
Antara Koh
An established foundation-engineering, civil and marine contractor: self-performs bored piling, driven piling and earth-retaining works, with a marine and civil arm undertaking jetties, bridges and prestressed concrete, and ERSS and strutting. Structural building-steel scope is secondary to its civil, marine and piling work. ISO 9001/14001.
Website (opens Antara Koh in a new tab)
Steelmech
A structural-steel fabricator and installer with a stated annual capacity of 5,000 tonnes in Singapore and BCA Certified Specialist Builder (Structural Steelwork) status; ISO 9001/14001/45001 with coded welders and in-house NDT. Reference job: the 480-tonne steel canopy for the Singapore Oceanarium at Resorts World Sentosa.
Website (opens Steelmech in a new tab)
Sin Hong Seng Engineering
A Senoko Road structural-steel and metalwork fabricator and installer serving public and private projects — industrial buildings, roof trusses, metal catwalks, canopies and temporary structures. Portfolio includes Vision Exchange and Twin Waterfall EC.
Website (opens Sin Hong Seng Engineering in a new tab)
Anderco
A Tuas-based structural-steel fabricator (beams, rails, bars; cutting, forming, joining, galvanising) with Singapore Structural Steel Society accreditation, addressing corrosion protection and floor-vibration design. Projects include Victoria Junior College and St George's Church.
Website (opens Anderco in a new tab)
Hoe Hoe Engineering
A Woodlands structural-steel specialist offering detailing and drafting, fabrication and installation, grown from a metalworks contractor into a structural-steelworks firm serving residential and building projects.
Website (opens Hoe Hoe Engineering in a new tab)
Zhang Steel
A Woodlands structural-steelworks fabricator and erector with a 60-strong fabrication-and-erection crew, BCA certification, SSSS membership and IAS certifications; work delivered with main contractors including STEC, Sunpeak and Sen Tat.
Website (opens Zhang Steel in a new tab)

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