Convention Centre | Convention
Hong Kong Convention and Exhibition Centre Expansion — Stone Works
48,000 ㎡ · Long-span column-free flooring · Delivered for global trade events
Hong Kong Convention and Exhibition Centre expansion — 48,000 ㎡ of long-span column-free exhibition flooring and ancillary public-area stone. Facing a 60 m column-free structure, 150+ events a year and construction without closing the venue, HENGSHENG MARBLE S&T CO. LIMITED Stone delivered in 28 months using digital workflows.
The international convention center is built around "column-free space": the 60 m-span halls use Silver Grey Granite large-format flooring to carry heavy exhibition loads, the VIP and conference areas use warm Botticino for a sense of occasion, and the press center and multi-function hall use contrasting Nero Marquina for depth — three principal stones balancing "adaptability" and "ceremony" in convention architecture.
HENGSHENG MARBLE S&T CO. LIMITED Stone supplied and installed all stone for the 48,000 ㎡ of walls and floors and ancillary facilities: 32,000 ㎡ of long-span exhibition flooring, 16,000 ㎡ of public-area wall cladding and all VIP and back-of-house stone; delivered zone by zone over 28 months while the center kept operating, hosting 150+ events a year with zero disruption.
Three principal stones cover every scenario across the long-span exhibition halls and public areas, unifying adaptability, ceremony and maintenance cost.
All 14 photographs are as-built records of the completed areas. Click any image to view the stone details enlarged.
Six stages from 3D scanning to zoned handover — 28 months, zone by zone, while the center stayed open.
360° laser scanning of the four 60 m-span halls produced millimetre-level point clouds, resolving 326 structural deviations in advance.
32,000 ㎡ of slabs pre-assembled and numbered hall by hall, producing piece-by-piece installation drawings aligned with the zoned works program.
Five-axis CNC machined 26,000 ㎡ of 30 mm bush-hammered granite to a tolerance of ±0.5 mm.
The halls' 30 mm slabs travelled in steel-framed wooden crates — zero breakage throughout city delivery.
A 50-tonne mobile crane with vacuum lifters, working nights to the zoned program so daytime events were never disturbed.
Expansion joints at 6 m centers across the long-span halls, sealed with elastic sealant for a service life beyond 50 years.
Craft details up close — in a long-span venue, precision hides in the millimetres.
Joints at 6 m centers in the 60 m-span halls with elastic sealant; no cracking after 100,000 fatigue cycles.
Hall floors siliconised and crystallised to a gloss of 90° or above, stain resistance grade 5; zero damage across 150+ events a year.
Hall flooring uses prestressed composite panels with stone facing, cutting self-weight by 35%.
200×200 mm cable trenches precast into the hall floor; trench covers level with the stone to ±0.5 mm for rapid booth hook-ups.
Modular standard stage design with pre-set positioning inserts — a 1,000 ㎡ stage erected within 3 hours.
Deep cleaning within 6 hours after each event and a full re-grind each quarter; gloss still at 88° after three years in service.
All three principal stones of this project are kept in stock for convention-type works. Click through for the full product range.
The VIP areas' own warm stone; 15,000 ㎡ kept in stock for rapid delivery on convention projects.
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The exhibition halls' own granite; 20,000 ㎡ of 30 mm thick slabs in stock, suited to long-span public spaces.
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The press center's contrasting stone; its mirror polish delivers the visual punch media settings demand.
View details →A 60 m column-free span, 150+ events a year, and construction without closing the venue — HENGSHENG MARBLE S&T CO. LIMITED Stone answers with data.
60 m column-free structures are highly sensitive to floor flatness; conventional stone flooring easily sags mid-span or debonds.
Hall floors host 150+ exhibitions a year; constant booth assembly and dismantling wears the surface dull.
The center kept operating throughout; works could not disturb live events, and noisy trades had to fit into gaps between exhibitions.
Exhibition booths are equipment-dense, with average floor loads of 50 kPa; ordinary stone flooring cracks or settles under them.
Whatever the scale of your project, our engineering consultants will tailor the optimal stone solution for you — from material selection through to handover, with one-to-one service throughout.
Thank you for your enquiry. Our engineering consultant will contact you within 24 hours.
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