For global agricultural professionals seeking reliability in greenhouse construction, our galvanized steel tubes represent the pinnacle of engineering excellence. Designed to withstand corrosive environments, heavy loads, and extreme weather, we deliver tubing solutions that ensure decades of maintenance-free performance. As a manufacturer deeply attuned to international project requirements, we combine rigorous quality standards with unmatched flexibility in customization and rapid delivery.
1. Why Our Greenhouse Galvanized Steel Tubes Stand Out
① Superior Corrosion Resistance
Our tubes undergo hot-dip galvanization, where steel is immersed in molten zinc to form a metallurgical bond. This creates a barrier 5× more protective than electroplating, with a typical coating density of 200–460 g/m² . The zinc sacrificially corrodes before the steel, making our tubes ideal for:
High-humidity greenhouse environments
Coastal or marine-adjacent farms
Chemical exposure (fertilizers, pesticides)
② Enhanced Structural Integrity & Longevity
Manufactured from Q235, S355, or ASTM A500 Grade B/C steels , our tubes offer:
Tensile strength of 400–550 MPa
Yield strength up to 345 MPa
Lifespan exceeding 25 years even in tropical/coastal zones
③ Economic Efficiency
Compared to stainless steel, our galvanized tubes deliver 90% of the corrosion resistance at 50–60% lower cost. Reduced maintenance and replacement needs further lower lifetime expenses.
2. Internationally Compliant Standards & Specifications
We adhere to global standards demanded by engineering firms and procurement teams:
① Key Certifications
ISO 9001, ISO 14001 – Quality & environmental management
CE Marking – Compliance with EU safety standards
ASTM A53/A500 – U.S. structural tubing specifications
BS 1387 – British standard for screwed/socketed tubes (Classes A/B/C)
② Commonly Stocked Dimensions for Greenhouses
Table: Popular Greenhouse Tube Specifications for Global Projects
| Outer Diameter (OD) | Wall Thickness | Class (BS1387) | Standard Length | Coating Type |
|---|---|---|---|---|
| 1/2″ (21.3 mm) | 2.0–2.6 mm | Class A (Light) | 6.0 m, 6.5 m | Hot-dip galvanized |
| 1″ (33.7 mm) | 2.6–4.0 mm | Class B (Medium) | 6.0 m, 11.8 m | Hot-dip galvanized |
| 2″ (60.3 mm) | 2.9–4.5 mm | Class B/C (Heavy) | 6.0 m, 12.0 m | Hot-dip galvanized |
| 4″ (114.3 mm) | 3.6–5.4 mm | Class C (Heavy) | 12.0 m | Pre-galvanized |
Wall thickness tolerance: ±5–12.5%
Class A (Light): Marked brown – For low-load vertical posts
Class B (Medium): Marked blue – Standard trusses & bracing
Class C (Heavy): Marked red – Snow-prone regions or heavy equipment
3. Customization Capabilities: Tailored to Your Blueprint
We specialize in engineer-approved modifications to meet unique project demands:
① Dimensional Flexibility
Diameter: 1/2″ to 16″ (21.3–406.4 mm)
Wall Thickness: 0.6–20 mm (custom SCH 10, 40, 80 profiles)
Lengths: 1–12 m (fixed) or continuous coils for curved roofs
② Value-Added Processing
Bending: Pre-curved tubes for arched greenhouses (radius customization)
End Finishing: Threaded, grooved, bevelled, or socketed ends for rapid assembly
Surface Options: Pre-galvanized (60–150 g/m²) for indoor use; Hot-dip (200–460 g/m²) for harsh climates
4. One-Stop Solutions: Greenhouse Pipes + Matched Accessories
Eliminate compatibility risks with our integrated component ecosystem:
① Structural Connectors
Base plates, corner brackets, purlin clips
UV-stabilized nylon or galvanized steel options
② Irrigation & Climate Systems
Galvanized trellising wires & grow channels
Mounting clips for HVAC, fogging, or shade systems
③ Foundation & Security
Ground stakes and anchor kits for sandy/soft soils
Anti-dust end caps and protective PVC sleeves
5. Quality Assurance & Fast Global Delivery
① Rigorous Inspection Protocols
Raw Material Testing: Sourced from certified mills (HBIS, Shougang)
In-Process Checks: Ultrasonic weld inspection, coating thickness verification
Pre-Shipment Review: 3rd-party validations (SGS/BV) with photo documentation
② Streamlined Logistics
Stock Orders: Shipped in 3–5 days for 100+ standard sizes
Custom Orders: Delivered in 15–20 days
Packaging: Waterproof wrapping + fumigated wooden crates (safe for container transport)
6. Applications: Where Our Tubes Excel
Multi-span greenhouses: High-strength trusses for 30m+ clear spans
Hydroponic systems: Corrosion-resistant NFT gutter mounts
Retractable roof structures: Precision-bent arches
Heating pipe networks: Bundled with insulation clamps
Choose Excellence, Choose Partnership
We don’t just supply tubes – we deliver certified structural solutions that greenhouses worldwide rely on. With over 1.5 million tons of annual galvanized pipe capacity, we scale to meet agribusiness demands without compromising speed or precision.
Get a project-specific quote within 24 hours – Send your drawings/GERBER files to our engineering team. Optimize your structure’s durability and cost with tubing tailored for your climate, your loads, and your vision.
→ Contact us to discuss ASTM/BS/DIN-compliant tubes or request a sample kit.
