Explore our flagship slide-folding and collapsible modular units designed for rapid assembly, reduced shipping overhead, and maximum durability in East Java's maritime and industrial climates.
As Indonesia’s second-largest metropolis and the primary maritime gateway to Eastern Indonesia, Surabaya (East Java) is experiencing unprecedented industrial expansion. Driven by major maritime infrastructure projects surrounding the Port of Tanjung Perak, expanded manufacturing corridors in Rungkut and Gresik, and large-scale agricultural and mining support logistics across Java and neighbouring islands, commercial entities demand high-speed, cost-effective, and resilient infrastructure.
Traditional brick-and-mortar construction in the Surabaya metropolitan area faces severe bottlenecks: escalating raw material costs, prolonged labor timelines, high soil moisture challenges along coastal plains, and strict municipal zoning requirements. To solve these friction points, multinational contractors, logistics providers, and infrastructure developers are transitioning toward Slide Folding Container Systems (Z-Box Technology).
Surabaya features a tropical wet and dry climate with elevated humidity levels (averaging 75%–85%) and severe saline atmospheric exposure along the Madura Strait. Standard mild-steel structures rapidly degrade. Our slide folding containers incorporate hot-dip galvanized steel framing (Q235B/Q355B alloy) finished with fluorocarbon powder coating, resisting salt spray corrosion and thermal fatigue caused by intense solar exposure.
By utilizing Tanjung Perak Port as the primary discharge hub, imported modular Z-Box units can be transferred onto interisland vessels destined for Sulawesi, Maluku, or Papua. The compact folded geometry (4-in-1 standard shipping footprint) yields massive ocean freight savings compared to pre-assembled rigid modular structures.
Unlike basic flat-pack or drop-down units, engineering a true Slide Folding Z-Box Container requires micro-precision kinematic hinges, double-layer weather sealing, and structural load balancing to guarantee structural stability under tropical storm conditions.
| Specification Parameter | Standard 20ft Foldable Unit | Heavy-Duty Sliding Z-Box | Surabaya High-Thermal Tropical Spec |
|---|---|---|---|
| Collapsed Dimensions (mm) | 5800 x 2438 x 390 | 5900 x 2438 x 450 | 5800 x 2500 x 400 |
| Expanded Dimensions (mm) | 5800 x 2438 x 2560 | 5900 x 6300 x 2560 (Expanded) | 5800 x 2438 x 2600 |
| Frame Material & Coating | Galvanized Steel Q235B (2.5mm) | Galvanized Steel Q355B (3.0mm) | Hot-Dip Galvanized C4 Fluorocarbon |
| Thermal Insulation Core | 50mm EPS / Glasswool Panel | 75mm Polyurethane (PU) Foam | 75mm High-Density Rockwool (Fireproof) |
| Wind Load Resilience | Category 10 (90-100 km/h) | Category 12 (115-130 km/h) | Category 12+ Anti-Typhoon Engineered |
| Seismic Resistance Index | Grade 7 Earthquake Rating | Grade 8 Earthquake Rating | Grade 8+ Structural Redundancy |
| Deployment Speed | 4 Workers / 10 Minutes per unit | 4 Workers / 15 Minutes per unit | 4 Workers / 10 Minutes per unit |
Utilizes continuous stainless steel structural piano-hinges with EPDM weather-sealing gaskets. This guarantees zero water ingress during East Java's intense monsoon seasons (November–April).
Specially engineered internal perimeter gutters collect heavy tropical rainfall, routing water away via concealed downspouts in four corner columns, preventing pooling and rust.
Pre-wired factory circuits conforming to Indonesian IEC/SNI electrical standards. Units feature plug-and-play IP65 quick connectors for rapid deployment upon unfolding.
Procurement transparency is vital for B2B buyers, EPC contractors, and project managers. Below is our benchmark pricing spectrum for bulk wholesale orders shipped directly to Port of Tanjung Perak, Surabaya. Prices vary depending on panel insulation thickness, custom internal partitioning, and structural customization.
| Model Category | Core Specs | FOB Factory Price (USD) | Est. CIF Surabaya Price (USD)* | Target Application |
|---|---|---|---|---|
| Standard Collapsible Z-Box (20ft) | 50mm EPS, Galvanized Frame | $1,800 - $2,300 | $2,250 - $2,800 | Worker Accommodation, Site Storage |
| Heavy-Duty Expandable 3-in-1 Container | 75mm PU Panel, Sliding Wings | $4,200 - $5,800 | $4,850 - $6,500 | Commercial Showrooms, Mobile Medical Units |
| Tropical Spec Fireproof Foldable House | 75mm Rockwool, C4 Coating | $2,400 - $3,100 | $2,900 - $3,700 | Mining Camps, Industrial Complexes |
| 2-Storey Modular Office Assembly | Combined 4 Units + External Staircase | $9,500 - $13,500 | $11,200 - $15,400 | Corporate Site Head-Office, Engineering HQ |
*Note: Estimated CIF Surabaya prices include ocean freight to Tanjung Perak based on standard 40ft HQ container loading (which holds 10 to 12 collapsed Z-Box units). Import tariffs, local port handling (THC), and Indonesian DSN/VAT (PPN) are handled according to local import regulations.
Foshan Zhonghui Green Building Integrated Housing Co., Ltd. is located in the heart of the Guangdong-Hong Kong-Macao Greater Bay Area (Guangzhou/Foshan), serving as an elite global manufacturer of advanced modular, flat-pack, and slide-folding container housing systems.
Built upon 15 years of dedicated engineering and design innovation, the company maintains a complete ecosystem encompassing R&D, automated roll-forming manufacturing, structural integrity testing, international sales, and worldwide assembly guidance.
Foshan Zhonghui has delivered robust modular housing projects across Southeast Asia, South America, and the Middle East, adapting every installation to local building standards and environmental demands.
Rapid deployment of 120 Z-Box units for port expansion staff offices and customs inspection quarters.
Heavy-duty insulated fold-out units accommodating 1,500 miners under extreme weather environments.
Multi-storey detachable container office complex deployed in under 10 days for infrastructure contractors.
Luxury expandable geothermal modular units built along coastal tourist zones for eco-resort living.
Navigating Indonesian import requirements and site-level installation standards is crucial for project success. Foshan Zhonghui provides end-to-end B2B support for clients operating throughout Surabaya, Sidoarjo, Gresik, and wider East Java:
We supply complete documentation including HS Codes (8905/9406), Certificate of Origin (Form E for ASEAN-China Duty Exemption), mill test certificates, and commercial invoices ensuring seamless clearance through Customs Directorate in Surabaya.
Electrical wiring systems inside our Z-Box containers are engineered to fit 220V/50Hz local grids, compatible with Indonesian SNI wiring codes and fitted with flame-retardant conduit systems for maximum site safety.
Our field engineering division provides video instruction manuals, step-by-step CAD blueprints, and optional remote or on-site supervisor dispatch to guide local Indonesian installation crews.
Browse our full range of certified foldable, expandable, and detachable container solutions available for immediate factory order and shipment to East Java ports.
ZHONGHUI HOLDINGS
