Prefabricated Double-Steel Frame Solar Greenhouse

Ruize manufactures the Prefabricated Double-Steel Frame Solar Greenhouse in China, with its own factory for steel processing and hot-dip galvanizing, and supplies the system as a China manufacturer, supplier and factory for agricultural projects. It is developed for planting bases, medicinal plant nurseries, premium fruit and vegetable farms and other operations that need a stronger greenhouse structure for cold, windy or snowy environments.

The main difference from a conventional single-steel-frame solar greenhouse is the parallel double-frame arrangement. Two steel frames work together as a reinforced structural system, providing greater support for the greenhouse covering, insulation components and selected auxiliary equipment. The actual frame spacing, member size and foundation should be designed according to the local wind, snow and site conditions.

Double-frame Structure for Higher Structural Capacity

Each greenhouse bay uses two parallel steel frames instead of a single main frame. This increases the amount of structural steel supporting the roof and greenhouse covering while improving overall rigidity.

• Parallel double-frame arrangement strengthens the main load-bearing structure.
• Suitable for projects where heavier insulation or auxiliary equipment is required.
• Structural dimensions can be adapted to local wind and snow loads.
• Large-span layouts can be planned to preserve usable growing and working space.

This reinforced configuration is particularly useful in regions where winter snow, strong winds or additional roof-mounted equipment place greater demands on the greenhouse structure.

Solar Gain and Rear-side Heat Retention

Single-slope Front Roof

The front slope is designed to receive winter sunlight and can be configured around the geographical location and growing requirements of the project. PE, PO and EVA greenhouse films can be selected according to light transmission, temperature range, durability and crop requirements.

For winter crops, a suitable covering material can be combined with the thermal structure to help maintain a more stable indoor environment during periods of low outside temperature.

Insulated Rear Wall and Roof

The rear wall and rear roof form the main thermal-retention section of the greenhouse. Heat entering the greenhouse during daylight can be retained within the structure, while the insulated rear section helps slow heat loss after sunset.

For colder locations, thicker insulation, electric thermal blankets and heating equipment can be incorporated into the overall design. The required configuration should be determined from the local minimum temperature, crop temperature range and greenhouse operating conditions.

Prefabricated Assembly Without Field Welding

The structural components are manufactured and prepared before shipment, then assembled on site with standardized connecting fittings. This approach reduces the amount of cutting and welding needed during installation and can simplify construction for overseas agricultural projects.

Modular sections can also be separated for container transportation, making it easier to organize steel components, film materials and accessories for long-distance shipment.

Galvanized Steel for Outdoor Service

The double-frame structure uses carbon steel with hot-dip galvanized treatment for corrosion protection. The supplied process includes surface preparation, rust removal, high-temperature hot-dip galvanizing and passivation.

The galvanized finish helps protect the frame from moisture, rain, snow and outdoor oxidation. Actual service life depends on coating condition, local climate, structural loading and routine maintenance.

Configuration Options

The greenhouse does not need to use one fixed specification for every project. Frame dimensions, insulation arrangement, film type and environmental-control equipment can be selected according to the growing conditions and intended use.

Supporting Systems for Cold-weather Production

The reinforced frame allows the greenhouse to accommodate additional thermal and environmental-control equipment according to project requirements. Equipment selection should be based on the crop, local climate and target indoor conditions.

• Electric insulated blanket rolling system
• High-capacity winter heating equipment
• Top and side ventilation film openers
• Air circulation fans
• Integrated water and fertilizer system
• Internal and external shading systems
• Reinforced rainwater drainage channels

For projects growing sensitive or high-value crops, the structure can be combined with temperature and humidity monitoring to support more consistent environmental management.

Suitable for Cold-region Crops

The greenhouse is intended for protected cultivation where structural reinforcement and winter heat management are both important. Typical applications include:

• Large-scale planting bases in cold and snowy regions
• Overwintering projects for medicinal plants
• Premium flower and nursery plant facilities
• Strawberry growing and picking farms
• Off-season fruit and vegetable production
• Cold-climate agricultural demonstration projects

For high-value crops, the greenhouse configuration can be coordinated with insulation, heating and irrigation systems rather than relying on the structure alone to maintain crop temperature.

Large-span Planning for Agricultural Work

The reinforced double-frame design can be used for wider greenhouse layouts while maintaining an open working area. Depending on the structural calculation, internal column arrangements can be planned to leave sufficient room for crop rows, harvesting activities and agricultural equipment.

For connected greenhouse projects, service paths and working aisles can be incorporated into the overall layout. Their dimensions should be selected according to the machinery, transport carts and operating methods used on the site.

Overseas Project Delivery

Ruize can coordinate structural fabrication, greenhouse film, connecting components and selected supporting systems as part of an export-oriented project package. Components can be divided into transport-friendly modules and reinforced against moisture and impact before shipment.

Installation materials may include structural drawings, assembly instructions and installation videos. Remote technical assistance can also be provided during overseas assembly, while original frame fittings and greenhouse film can be supplied for later replacement.

Maintenance of the Double-steel Structure

The prefabricated design simplifies inspection and replacement of individual connecting parts. Routine maintenance should include checking the galvanized frame, connection fittings, greenhouse film, drainage paths and thermal-control equipment, particularly before winter and after severe weather.

Where local conditions cause damage to a film panel or individual connector, the relevant component can be replaced separately instead of replacing the complete greenhouse structure.

Frequently Asked Questions

What is the main advantage of the double-steel frame?

The parallel double-frame structure provides a reinforced load-bearing system compared with a conventional single-frame configuration. It is suitable for projects that need greater structural capacity or need to accommodate heavier insulation and selected auxiliary equipment.

Can the greenhouse be used in areas with heavy snow?

Yes. The reinforced structure is suitable for cold and snowy regions, but the greenhouse must be engineered according to the local snow load, wind conditions, span and foundation requirements. A stronger frame does not remove the need for site-specific structural calculation.

Can heavy insulation equipment be installed?

The reinforced structure provides a stronger basis for integrating thermal blankets and other auxiliary systems. The exact equipment weight and fixing method should be confirmed during structural design.

Can the greenhouse span be increased without adding many internal columns?

A larger-span layout can be considered because the double-frame structure provides additional structural support. The final span and column arrangement depend on frame specifications, local loads and the required foundation system.

Can the greenhouse be configured for very cold winter regions?

Yes. A cold-climate configuration can combine the double-steel frame with rear-wall insulation, thermal blankets, suitable greenhouse film and heating equipment. The required combination should be determined from local minimum temperatures and the temperature requirements of the crops.