English
Views: 0 Author: Site Editor Publish Time: 18-10-2025 Origin: Site
Tunnel greenhouses are designed around a single-span arched structure, typically overed with transparent plastic film. This minimalist approach drastically reduces material and construction costs compared to glass or polycarbonate greenhouses.
For commercial greenhouse operations, a reliable tunnel greenhouse supplier offers standardized modules that can be quickly installed on-site with minimal labor. Because of their flexibility and durability, these greenhouses are widely used for vegetables (tomatoes, cucumbers, peppers), leafy greens, flowers, and seedlings across Asia, Europe, Africa, and the Middle East.
A tunnel greenhouse typically features:
Span width: 5–12 meters
Ridge height: 3.5–5 meters
Length: 30–100 meters per unit
For larger commercial tunnel greenhouse farms, multiple tunnels are connected in parallel with shared service paths and irrigation systems. A skilled tunnel greenhouse supplier designs the optimal span and ridge height based on crop type, regional climate, and land conditions. Wider spans reduce cost per square meter but require stronger structural steel to resist wind and snow loads.
The framework of a tunnel greenhouse is primarily built from hot-dip galvanized steel pipes, chosen for their strength and corrosion resistance. The galvanization coating ensures long-term protection, particularly in humid or coastal climates.
| Component | Material & Size | Thickness | Galvanization |
|---|---|---|---|
| Main arch pipe | Φ48–Φ60 mm steel pipe | 1.5–2.0 mm | ≥ 275 g/m² |
| Purlins / Cross braces | Φ25–Φ32 mm steel pipe | 1.0–1.5 mm | ≥ 200 g/m² |
| Side wall posts | Φ32–Φ42 mm | 1.5 mm | ≥ 200 g/m² |
High-quality galvanized frames supplied by a professional tunnel greenhouse supplier can last 15–20 years with minimal maintenance.
For regions with strong winds or snow, additional bracing and anchoring systems can be added. The overall steel structure usually accounts for 40–50% of the total greenhouse cost.
The commercial greenhouse film covering is the most essential component of a tunnel greenhouse, determining its light transmission, insulation, and durability. A trusted tunnel greenhouse supplier typically offers two types of films: PE (Polyethylene) and PO (Polyolefin).
PE film is the most commonly used and cost-effective material for tunnel greenhouses. It’s transparent, flexible, and easy to install.
Thickness: 120–200 microns (0.12–0.20 mm)
Width: 8–12 meters
Lifespan: 2–3 years under normal UV exposure
Light transmission: 85–88%
Lowest material cost
High transparency for photosynthesis
Easy replacement and repair
USD 0.35–0.60/m² depending on UV and IR additives
A reliable tunnel greenhouse supplier can supply multi-layer co-extruded PE films with anti-drip, anti-dust, and thermal insulation layers, reducing condensation and improving light efficiency.
PO film is a premium option for growers demanding better durability, heat retention, and light diffusion. It’s increasingly popular for professional vegetable and flower production.
Thickness: 150–200 microns
Width: up to 14 meters (for wide tunnels)
Lifespan: 4–5 years
Light transmission: 88–92%
Light diffusion: 20–35% for uniform illumination
Longer lifespan than PE (up to double)
Enhanced strength and tear resistance
High light diffusion prevents leaf burn
Better temperature stability in cold and hot climates
USD 0.80–1.30/m² depending on optical coating and UV resistance
Although PO film costs more initially, a professional tunnel greenhouse supplier often recommends it for long-term operations because of its energy savings and reduced replacement frequency. The overall project ROI tends to be higher over 5 years.
| Feature | PE Film | PO Film |
|---|---|---|
| Light Transmission | 85–88% | 88–92% |
| Lifespan | 2–3 years | 4–5 years |
| Price Range | $0.35–0.60/m² | $0.80–1.30/m² |
| Maintenance Cost | Low | Very low |
| Ideal Use | Seasonal vegetables | Long-term crops & flowers |
For B2B clients, the right film choice depends on project duration, budget, and crop type. A professional tunnel greenhouse supplier provides detailed comparison charts and ROI analysis for each material type.
Tunnel greenhouses rely heavily on natural ventilation through roll-up sidewalls and roof vents.
Manual roll-up system: economical, cost ~USD 2–3/m²
Motorized roll-up system: higher efficiency, cost ~USD 4–6/m²
A qualified tunnel greenhouse supplier designs ventilation to ensure at least 15–20% of wall area is openable for effective cooling.
Depending on climate and crop needs, internal or external shading nets may be installed.
External shading: reduces radiation load by 40–60%
Internal shading: maintains consistent temperature and humidity
Shading system costs typically range USD 3–8/m². A reputable tunnel greenhouse supplier helps determine the best shading rate (40%, 55%, or 75%) for crops such as roses, lettuce, or cucumbers.
Efficient irrigation systems reduce resource waste and improve yield quality.
Drip irrigation: standard system for vegetables
Sprinklers: ideal for leafy greens and seedbeds
Fertigation units: automatic control of nutrients
Average irrigation system cost: USD 3–6/m². Many tunnel greenhouse suppliers offer modular irrigation kits compatible with smart control panels.
Different crops require different systems, which directly impacts total investment.
Tomatoes need precise temperature and humidity control with drip irrigation and adequate ventilation.
Cost range: USD 35–55/m².
A professional tunnel greenhouse supplier will recommend double-layer film or PO film for better insulation and extended growing seasons.
Leafy greens such as lettuce or spinach thrive under simpler systems with natural ventilation and basic irrigation.
Cost range: USD 25–40/m², depending on structure size and film quality.
A reliable tunnel greenhouse supplier helps optimize cost by designing efficient layouts for high turnover crops.
Flowers and roses require consistent humidity and light control. These projects often include shading nets, fans, and misting systems, increasing the investment.
Cost range: USD 45–65/m² for complete systems.
An experienced tunnel greenhouse supplier ensures optimal microclimate control for premium-quality flowers.
| Component | Description | Cost Share (%) |
|---|---|---|
| Steel Structure & Film | Frame, film, connectors | 45–55% |
| Systems (Ventilation, Shading, Irrigation) | Environmental controls | 25–35% |
| Installation & Civil Work | Foundation, anchors, labor | 10–15% |
| Automation & Sensors | Controllers, fans, motors | 5–10% |
Every tunnel greenhouse supplier adjusts quotations based on local materials, shipping distance, and system automation level. For large B2B projects, volume discounts and modular design further reduce average cost.
As a leading tunnel greenhouse supplier from China, Top Greenhouse specializes in designing, manufacturing, and exporting commercial tunnel greenhouses worldwide.
We provide turnkey B2B solutions covering design, steel structure fabrication, film selection (PO or PE), system configuration, and on-site installation guidance.
Our advantages:
Full hot-dip galvanized structure with long corrosion protection
Durable PE and PO film options from certified factories
Optimized ventilation and shading system for different climates
Fast installation with prefabricated modular kits
Professional after-sales and technical support
Working with a single experienced tunnel greenhouse supplier like Top Greenhouse guarantees consistent quality, transparent pricing, and efficient logistics from China to your site.
The price of a tunnel greenhouse depends on multiple factors — scale, steel structure, covering material (PO or PE film), system configuration, and crop type.
Among all greenhouse types, the tunnel greenhouse remains the most economical and scalable choice for commercial production. By partnering with a reputable tunnel greenhouse supplier, investors can achieve optimal cost-performance balance and long-term profitability.
Top Greenhouse — your trusted tunnel greenhouse supplier in China — offers high-quality materials, reliable engineering, and complete project support to help your agribusiness grow sustainably.
