The Large Multi-Span Greenhouse with Polycarbonate and Glass Covering is built for commercial growers who need scale and a uniform climate. Its hot-dip galvanized steel frame spans 6.4 to 10 meters and stands 4.3 to 6.5 meters tall, while polycarbonate and glass cladding balance light transmission with insulation. Ziyang Bozong delivers the frame, covering, and optional climate systems as one package, built to your span and local snow or wind load, and backed by a 10-year structural warranty. It suits vegetable, seedling, and hydroponic operations that want one mechanized growing hall instead of several separate houses.
The Large Multi-Span Greenhouse with Polycarbonate and Glass Covering joins several arches into one continuous growing hall, raising land use and keeping temperature even from end to end. Ziyang Bozong builds the structure, the cladding, and the climate systems as a single coordinated package so commercial growers can expand under one roof instead of managing several separate houses. The frame uses hot-dip galvanized steel pipe for corrosion resistance, and the covering pairs polycarbonate with glass to balance light transmission against heat retention.
This structure is often paired with our glass greenhouse line when a fully glazed house is required.
The multi-span layout suits operations that need one large, uniform environment: vegetable and seedling production, hydroponic rows, and flower or nursery benches. Because the climate can be zoned, one hall can hold propagation, growing, and hardening areas side by side. For field-scale planting supply, see our commercial farming greenhouse page.
Q: What is the lifespan of different types of greenhouses?
A: Up to 3-5 years for film, 20+ years for glass and polycarbonate greenhouses. Film covers require replacement every 3-5 years, while the galvanized steel frame lasts over 20 years. Glass and PC panels offer longer service life with minimal maintenance, making them ideal for permanent installations. Our greenhouse frames use hot-dip galvanized steel pipes with a double-sided zinc coating of 200-275 g/m², providing uniform, dense, and strongly adherent protection specifically engineered for high-humidity greenhouse environments and long-term corrosion resistance.
Q: How long does it take to install a commercial greenhouse?
A: Installation typically takes 2-4 weeks depending on project size and complexity. Standard multi-span greenhouses can be erected in 10-20 working days by our experienced technical team at Ziyang Bozong. On-site assembly time varies based on local conditions and project scale, but we provide detailed installation manuals and remote guidance to streamline the process.
Q: Can you customize greenhouse specifications for my farm?
A: Yes, we offer full customization including dimensions, span width, height, covering materials, and ventilation systems. Simply share your crop type, local climate conditions, and growing area requirements, and our engineering team at Ziyang Bozong will design a tailored solution that optimizes your growing environment and maximizes ROI.
Q: What is your warranty policy for greenhouses?
A: Our galvanized steel frame comes with a 5-year warranty against corrosion and structural defects. Film covers include a 3-5 year UV warranty depending on the grade selected, while glass and PC panels are covered by manufacturer warranties. Ziyang Bozong provides technical support and replacement parts throughout the lifespan of your greenhouse.
Q: What is the advantage of a multi-span greenhouse over multiple single-span tunnels for large-scale commercial production?
A: The primary advantage is land utilization efficiency. Multi-span greenhouses eliminate the gaps between individual tunnels—typically 1-2 meters per gap depending on drainage and access requirements—which can represent 10-15% of total land area in large single-span installations. This additional growing area translates directly to higher production capacity within the same land footprint. Beyond land savings, the continuous interior space simplifies equipment movement, reduces travel time for workers and machinery, enables more efficient irrigation system layout, and creates uniform growing conditions across the entire structure—supporting consistent crop quality and simplified management protocols.
Q: Can the covering be mixed on one house?
A: Yes. Polycarbonate is common on side walls for impact resistance, with glass on the roof for light; a film skin is an option where budget leads.
Q: How are climate systems added?
A: Cooling, heating, irrigation, ventilation, fertilization, and shading are modular options specified at order time, so you pay for what the crop needs.
Q: What foundation is required?
A: A concrete perimeter beam with anchor bolts is standard; independent vegetable greenhouse setups may use lighter footings depending on span and load.
Mark Wu leads international projects at Ziyang Bozong, coordinating structure design, covering selection, and climate-system integration for overseas buyers. He works with your local conditions and crop plan so the delivered house matches the site rather than a catalogue photo.
"We combined three old houses into one multi-span hall and cut our heating variance noticeably." â greenhouse operator, confirmed grower
"Bozong matched the span to our wind zone and the cladding to our light needs." â project buyer, commercial farm
For soilless setups, our hydroponics system pairs directly with this structure.
