Multi-Storey Steel Structures · Commercial
Commercial Buildings — Designed to Change Hands, Floors and Tenants
A commercial building is only as good as its ability to change. Our steel frames deliver long-span open floors, faster fit-out and future flexibility — for offices, retail, showrooms and mixed-use developments, engineered to AISC & Eurocode.
Fewer Columns long-span open floor plates | Parallel Build fabrication while site work runs | MEP-Ready cellular beams pass services through | Remodel-Proof layout changes without structural pain |

A Portfolio Written in Towers
Landmark commercial projects we fabricated — the same team and lines stand behind your building.

CFST + RC Core Hanyu Financial Business Center 20,000 t steelwork — pipe-column frame with reinforced-concrete core tube. | 
Tallest in Gansu Rongguang Longhui Plaza A & B 343,400 m² GFA · 21,300 t steel — frame + core-tube system. | 
Steel-Composite Tianjin & Jinan Hang Lung Plaza Two large retail complexes, ≈12,000 t steelwork each. |
7 dedicated steel production lines | 50,000 t annual fabrication capacity | 2,000 t/day supply capability |
Technical Data at a Glance
Every project customized — these are the ranges we work in daily.
| Item | Specification |
|---|
| Structural system | Steel frame / frame + core tube / composite floor deck |
| Steel grade | Q235B, Q355B, S355JR (EN 10025), A572 Gr.50 |
| Surface treatment | Hot-dip galvanized (ISO 1461) or painted to ISO 12944 |
| Connections | Welded (AWS D1.1 / EN 1090) + HS bolts A325/A490, EN 14399 |
| Envelope options | Glass curtain wall; EPS / PU / rock-wool sandwich panels |
| Codes served | AISC 360 · Eurocode 3 · AS 4100 / AS/NZS 1170 (on request) |
| Lead time | 25–60 days · T/T 30% deposit, 70% before shipment |
Why Developers Switch to Steel
The decision metrics a commercial project actually gets judged on.
| What you get judged on | Steel frame (ours) | Cast-in-place concrete |
|---|
| Time to fit-out | 30–40% faster, no curing wait | Slab cycle every 7–10 days |
| Leasable area | Slim members + fewer columns → +5–8% rentable floor | Bulky columns eat leasable space |
| Span | 12–36 m open floor plates | ~8–9 m typical grid |
| Tenant churn | Cut new openings & re-plan without demolition | Every change means reinforcement |
| Foundation | ≈1/3 structural weight → lighter footings | Heavy self-weight, deeper foundations |
From Inquiry to Top-Off — How Your Project Runs
01 Send Inquiry Spans, floors, site — we reply within 24 h | 02 Design & Quote 3D frame model + drawings in 48 h | 03 Fabrication Milestone updates at every stage, 25–60 days | 04 Export Packing Marked bundles, seaworthy, full documents | 05 Erection Support Manuals + remote engineer until topped-off |
| Want an exact quote? Just send these 4 numbers: |
| 1) floors × floor height · 2) bay span × total length · 3) site wind & snow (or city name) · 4) façade intent (curtain wall / panel / masonry)
— WhatsApp it to us, and the model comes back within 48 hours. |
Send spans, floor loads & façade intent — get an aligned design before we cut steel. Our engineers coordinate structure, services and fit-out in one pass, from shop floor to top floor. |