Portal Steel Structure Metal Frame Farming Agriculture Commercial Large Multi-Span Steel Structure Greenhouse for Plants
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Product Highlights
- High Strength and Durability: Withstands heavy snow, strong winds, and rainfall with 15-20+ years service life.
- Flexible Large Span Design: Allows complex shapes and column-free spaces for optimized planting layouts.
- Corrosion Resistance: Coated with galvanization or paint to resist rust in humid environments.
- Easy Modification and Expansion: Modular components enable easy disassembly, relocation, and capacity upgrades.
- High Recyclability: Steel recycling rate exceeds 90%, supporting green development concepts.
- Customizable Steel Grade: Available in Q235B or Q355b steel grades to meet specific project needs.
- Customizable Surface Treatment: Options include painting or galvanization for enhanced protection.
- Efficient Prefabrication: Factory prefabricated and site assembled to shorten construction cycles.
Product Attributes
- Customization
- Available
- After-sales Service
- Online Technical Support
- Connection Form
- Bolt Connection
- Model NO.
- SSB-GREENHOUSE-002
- Construction Member
- Steel Column
- Grade
- Quality Carbon Structural Steel And Alloy Structural Steel
- Molding Method
- Forging Steel
- Residential Wall Structure
- Bottom Wall Beam
- Standard
- GB
- Steel Type
- H-Section Steel
- Structure
- Steel Structure
- Steel Grade
- Q235B or Q355b
- Type
- Steel Structure Building
- Surface
- Painting, Galvanization
- Forming Method
- Forging Steel
- 1
- Metal Frame Greenhouse
- 2
- Commercial Greenhouse
- 3
- Large Greenhouse
- 4
- Agricultural Greenhouse
- 5
- Multi Span Greenhouse
- 6
- Tunnel Greenhouse
- 7
- Garden Greenhouse
- Transport Package
- Nude Packing
- Origin
- China
- HS Code
- 7308900000
- Production Capacity
- 30000ton Per Year
- Package Size
- 1000.00cm * 200.00cm * 120.00cm
- Package Gross Weight
- 2000.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Portal Steel Structure Metal Frame Farming Agriculture Commercial Large Multi-Span Steel Structure Greenhouse for Plants
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Product Description

Steel structures feature excellent tensile and compressive strength, enabling them to withstand harsh weather conditions such as heavy snow, strong winds, and rainfall.
They have a long service life (typically 15–20+ years) with minimal deformation, reducing the need for frequent maintenance or replacement.
2. Flexible Design and Large Span
Steel frames allow for flexible architectural designs, including complex shapes (e.g., arched, gabled) and large open spaces without intermediate supports.
This design flexibility optimizes interior space for planting layouts, equipment installation, and workflow management.
3. Lightweight and High Stability
Despite their strength, steel components are relatively lightweight, simplifying transportation and installation.
The material's high rigidity ensures stable structural performance, even in areas with high seismic activity.
4. Corrosion Resistance and Low Maintenance
Steel structures can be coated with anti-corrosive materials (e.g., galvanization, paint) to resist rust and environmental damage, making them suitable for humid greenhouse environments.
Minimal maintenance (e.g., periodic inspections and re-coating) is required, reducing long-term operational costs.
5. Good Thermal Performance
Steel frames can be integrated with thermal insulation materials (e.g., double-layer films, polycarbonate panels) to improve heat retention, reducing energy consumption for heating.
This is particularly beneficial for year-round cultivation in cold regions.
6. Easy Modification and Expansion
Steel components are modular and can be easily disassembled, relocated, or expanded to adapt to changing cultivation needs (e.g., adding new sections or upgrading equipment).
This adaptability makes steel greenhouses a cost-effective long-term investment.
7. Sustainability and Recyclability
8. Compatibility with Advanced Systems
9. Uniform Load Distribution
10. Cost-Effectiveness in the Long Run




Steel structure buildings have excellent mechanical properties, high steel strength, good toughness and ductility, can stably bear heavy loads, and ensure safety in disasters such as earthquakes.
main steel frame | H section steel beam and columns, painted or galvanized |
Secondary frame | Hot dip galvanized C purlin , steel bracing , tie bar , knee brace , edge cover etc. |
Roof panel | EPS sandwich panel , glass fiber sandwich panel , rock wool sandwich panel , and PU sandwich panel or steel sheet |
Wall panel | Sandwich Panel or Corrugated Steel Sheet |
Tie Rod | Circular Steel Tube |
Brace | Round Bar |
Knee Brace | Angle Steel |
Roof Gutter | Color Steel Sheet |
Drawing | We can make the design and quotation according to your require or your drawing |







We are a global one-stop steel structure solutions manufacturer, specializing in delivering end-to-end services from innovative design to professional installation, with a proven track record of high-quality execution.
We are a direct manufacturer with our own production facility, enabling us to offer highly competitive factory prices. Our state-of-the-art factory , ensuring large-scale project fulfillment with efficiency.
We implement a rigorous, multi-stage quality control system that covers every phase of production.
About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASI255920". Items marked "" are certified.
Company Profile
Headquartered in the High-Tech Development Zone of Jining, Shandong Province, Shandong Shijie Heavy Industry Co., Ltd. And its sister company, Henan Hengfeng Steel Structure Engineering Co., Ltd., operate as a unified manufacturing group under the same ultimate ownership. Globally, we deliver our end-to-end solutions through our dedicated export brand, SynJect.
Drawing on 17 years of export expertise and a proven track record across more than 60 countries, we provide integrated EPC contracting and heavy fabrication. This global reach is backed by our robust manufacturing footprint: An 80, 000 m² facility with an annual capacity exceeding 500, 000 tons, RMB 120 million in registered capital, and a skilled workforce of over 600 professionals.
Our core expertise spans civil construction, petrochemical facilities, long-distance pressure pipelines, heavy steel structures, pressure vessels, and skid-mounted refueling stations.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Inside The 11th Inoustrial Park, Huangtun Subdistrict, High-Tech District, Jining, Shandong, China
-
Registered Capital
- 120,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Qingdao Port
-
Minimum Order Quantity
- 20 tons
-
Supply Chain Partners
- 8
Our Production Capability & Technical Expertise
- Main Products
- Steel Structure Building, Steel Structure Warehouse, Steel Structure Workshop, Space Grid Structure, Vertical Storage Tank, Sf Double Layer Tank, Prefabricated Warehouse, Pressure Vessel, Truss Grid Structure, Mobile Fuel Station
-
Production Lines
- 3
-
Production Machines
- Pipe cutting machine, Space frame welding machine, Plasma cutting machine, Shaping machine, Steel structure welding machine, Shot blasting machine, Painting room, Rolling machine
-
Inspection Type for Finished Products
- 100% inspection(Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2019-03-22
-
Export Year
- 6 years
-
Main Markets
- Domestic
-
Repeat Buyers Choice
- 80%~100%
-
Number of Foreign Trading Staff
- 1
-
Overseas Agent/Branch
- No
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015, ISO45001:2018, ISO14001
-
Cooperated with Fortune 500
- No
FAQ
- Who we are?
- We are a global one-stop steel structure solutions manufacturer, specializing in delivering end-to-end services from innovative design to professional installation, with a proven track record of high-quality execution.
- Are you a factory or a trading company?
- We are a direct manufacturer with our own production facility, enabling us to offer highly competitive factory prices. Our state-of-the-art factory , ensuring large-scale project fulfillment with efficiency.
- What quality assurance and guarantees do you provide?
- We implement a rigorous, multi-stage quality control system that covers every phase of production.
- Do you offer designing service for us?
- Yes, we could design full solution drawings as your requirements.
- What is your terms of payment?
- T/T 30% as deposit in advance, and 70% to be transferred before booking space.
- What is the delivery time?
- Delivery time depends on order quantities. In general, the delivery time to the nearest seaport in China will be 40 days after receiving the deposit.
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Product Groups
- Industrial Factory And Warehouse Building
- Steel Structure Commercial Office Building
- Public Venues
- Steel Structure Public Infrastructure Projects
- Steel Structure Agricultural Livestock Farming Type
- Light Gauge Steel Prefabricated Houses And Villas
- Metallurgical Chemical Industry Type Steel Structures
- Steel Structure Engineering Construction
- Large Vertical Storage Tank
- Petrochemical Storage Container
- Energy Gas Stations
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