Glass greenhouse 10

Tempered glass greenhouse

Commercial growers have specific, essential needs: stable, long-term, high-yield harvests; ample operational space; high light transmission; a layout aligned with their cultivation plans; and the flexibility to integrate various environmental control systems in the future. Let’s look at how tempered glass greenhouses address these requirements.

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Commercial growers often face a number of challenging issues. For instance, standard greenhouse glass can shatter into sharp shards when struck by hail, high winds, or accidental impacts—potentially damaging the crops inside. Furthermore, uneven sunlight distribution can create localized"hot spots"within the greenhouse, which may scorch leaves and fruit, leading to inconsistent yields and an increased risk of disease. To address these concerns, our company offers custom-designed tempered glass greenhouses. Take a look at our design solutions!

Zheyang Glass Greenhouses are designed based on practical requirements, with carefully established standards that ensure the production processes, core equipment, and primary structures are advanced, functional, and reliable. Guided by principles of energy efficiency, water conservation, and high productivity, the greenhouse features a structure clad in tempered glass on the roof and all sides, maximizing transparency and providing an expansive field of view. The framework consists of hot-dip galvanized lightweight steel; the galvanized coating is uniform and dense, meeting anti-corrosion standards for agricultural greenhouses. This ensures long-term resistance to the high-humidity environment inside the greenhouse as well as erosion from rainfall, effectively preventing rust.
Advantages of tempered glass: It offers stable, long-term light transmission, with various specifications available to suit the specific light requirements of different crops. Tempered glass also provides superior impact and hail resistance; in the unlikely event of breakage, it shatters into small, blunt-edged granules, ensuring the safety of both personnel and crops within the facility.
Customized greenhouse framework: The specifications of the framework are tailored to the wind pressure and snow load data of the project site, guaranteeing robust wind resistance and load-bearing capacity. The overall structure is designed for a service life of over 20 years.

Systematic Functional Structure for Glass Greenhouses: External Shading System

During the peak of summer, characterized by intense sunlight and high temperatures, light levels often exceed the optimal range for crops such as tomatoes, flowers, and seedlings. Excessive sunlight can scorch leaves and fruit, while also causing temperatures inside commercial greenhouses to soar. Relying on evaporative cooling systems—such as wet pads and exhaust fans—for extended periods leads to significantly higher electricity costs. To address this, we have designed an external shading system for our tempered glass greenhouses.
The external shading system consists of a support framework, a control box with a motor, a transmission mechanism, travel limit switches, tensioning wires, end beams, and shading screens.
Reduction Motor: A high-quality, greenhouse-specific reduction motor (0.55 kW) equipped with a travel limit device, ensuring precise positioning and smooth, reliable operation.
Control Box: Supports both manual operation and automated control via travel limit switches.
Transmission Mechanism: The drive shaft utilizes 1 1/4-inch steel piping, while the push rods consist of Φ32×1.8 mm galvanized steel pipes—each connected to a rack-and-pinion assembly. The drive rods are made from specialized aluminum alloy profiles, arranged horizontally to pull the shading screens.
Shading Screen: A high-quality external shading screen with a 70% shading rate and a service life of over five years.

For commercial agricultural producers, achieving stable, long-term, and predictable yields requires a cultivation space designed for durability and tailored to the local climate. Zheyang’s tempered glass multi-span greenhouses feature a modular Venlo-style structure, offering a spacious and well-organized interior. This design is ideal for the trellised cultivation of tall-growing crops like tomatoes and cucumbers, while also perfectly accommodating the needs of strawberries, leafy greens, potted flowers, seedling propagation, and the cultivation of medicinal plants. Rather than applying a one-size-fits-all template, we customize each greenhouse to align with your specific crops, cultivation techniques, and operational requirements—carefully planning roof vent layouts, ventilation pathways, and drainage and condensation-collection systems to ensure the greenhouse infrastructure fully supports your production goals.

I. Overall Basic Parameters of Greenhouse
Model	Intelligent Greenhouse Type Venlo V1200
Single Building Area	9 vanes×7 bays, single building axis area 6048㎡
Total Planned Area	20160㎡
Total East-West Longitude	108m (12m x 9m)
North-South Total Longitude	56m (8m x 7 bays)
Greenhouse Orientation	East-West Orientation
Single Vane Width	12m
Bay width	4.0m
Column Height	3.5m
Summit Height	4.5m
External Shading Column Height	5m
Tilt angle of the ceiling	22°
Wind Load	0.45kN/m²
Snow Load	0.35kN/m²
Hanging Load	14kg/m²
Maximum Drainage Capacity	140mm/h
Applicable Ambient Temperature	-25℃～42℃
Seismic Intensity	≥6 degrees, seismic acceleration 0.05g
Power Supply Standard	Single Phase 220V / Three Phase 380V, 50Hz, Voltage Fluctuation ±5%
Main Steel Structure Service Life	≥20 years
Depth of cementation	0.8m point type concrete cementation
Zocalo	0.6m brick-concrete, insulation with 100mm polystyrene panel outside
Cementation Embedded Parts Pendant	One-way slope 5‰ (North→South)
Standard Cementation Load Capacity Value	≥100kPa
Aluminum Door Slap	4 sets, single door size 2.5m×2.5m; 2 games in curtain wall, 2 games in side wall

II. Main Steel Structure Profiles
Component Name	Profile Specification (mm)	Material	Remarks
Main Column	□120×120×3.0	Hot-dip galvanized	Independent foundation column
Auxiliary Column	□50×50×2.0	Hot-dip galvanized	Auxiliary support
Outward Opening Window Column	□100×50×2.5	Hot-dip galvanized	Wet curtain outer window frame
Transverse Composite Beam	□50×50×2.5	Hot-dip galvanized	Chord center height 700mm
Longitudinal Composite Beam	□60×60×2.5	Hot-dip galvanized	Chord center height 550mm
Herringbone Frame	—	Aluminum alloy	Roof herringbone support
Surrounding Beam	□50×50×2	Hot-dip galvanized	Four-side enclosure beam
External Shading Column	□50×50×2	Hot-dip galvanized	Shading frame column
External Shading Cross Beam	□50×50×2	Hot-dip galvanized	Shading transverse beam
External Shading Longitudinal Beam	□50×30×2	Hot-dip galvanized	Shading longitudinal beam
Drainage Gutter	2.5	Hot-dip galvanized cold-rolled steel sheet	With condensate collection and diversion groove
Fastener Standard: Truss/foundation bolts grade 8.8, other bolts grade 10.8; M8/M10/M12/M16 hot-dip galvanized hexagonal bolts and nuts, comply with GB5782, GB6170

III. Covering Material Parameters
Top Coating	5mm Single Layer Tempered Glass
Perimeter Walls	Hollow tempered glass 5+6A+5
Sealing Accessories	EPDM rubber gasket (standard HG 2402-92)
Structure Anti-condensation	Special condensation water collection tank + deflection hose under the gutter, to prevent dripping from damaging the seedlings

FAQ
Q1：What is the difference between tempered glass greenhouse and film greenhouse?

A: Tempered glass greenhouse has a much longer service life, stable light transmission, good air tightness and higher expandability. It is a long-term fixed asset for commercial farms. Film greenhouses are cheaper upfront but need frequent film replacement, with light transmission declining quickly under UV rays.

Q2：Is tempered glass easy to break? Is it safe?

A: Tempered glass is 4–5 times stronger than ordinary float glass. It can resist moderate hail and wind impact. If it breaks under extreme force, it shatters into small blunt particles instead of sharp shards, greatly reducing injury risks for workers and crops.

Q3：Can you customize the structure according to my local wind and snow load?

A: Yes. Before design, we collect your local weather data including maximum wind speed, snow load, hail frequency and rainfall. We adjust frame specification, glass thickness and support structure to adapt to your location.

Q4：Why do I need an external shading system for glass greenhouse?

A: External shading blocks solar radiant heat before sunlight enters the greenhouse, cooling efficiently and cutting energy consumption of cooling equipment. It prevents sunscald on fruits and leaves, protecting your crops in hot summer.

Q5：What crops are suitable to grow inside tempered glass greenhouse?

A: It is ideal for commercial tomatoes, peppers, strawberries, leafy greens, cucumbers, cut flowers, potted plants, medicinal herbs and seedling propagation. It supports high-value crops requiring stable climate and light.