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Help CenterPre-Galvanized Steel Pipe Q235 1.5mm Thickness for Greenhouse Frame and Fence
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Hemaokang Steel (Shandong) Co., Ltd. offers high-quality Pre-Galvanized Steel Pipe Q235 with 1.5mm thickness, specifically designed for greenhouse frames and fencing applications. Our factory-direct supply ensures competitive pricing, consistent quality, and reliable delivery. With an annual export value of US$50-100 million and ISO9001 certification, we are committed to providing durable, corrosion-resistant steel pipes that meet the rigorous demands of agricultural and construction projects.
These pipes are manufactured from Q235 grade carbon steel, known for its excellent weldability and strength-to-weight ratio. The pre-galvanized coating provides a uniform zinc layer that protects against rust and extends service life, making them ideal for outdoor use in greenhouses, fences, and structural frames. Available in standard lengths of 6 meters and customizable diameters, our pipes offer flexibility for various project requirements.
Key Features & Technical Specifications
- Material: Q235 carbon steel with excellent tensile strength and ductility.
- Thickness: 1.5mm (nominal) – balanced for lightweight yet robust frames.
- Coating: Pre-galvanized (hot-dip zinc coating) – typically 60-100 g/m², providing superior corrosion resistance.
- Dimensions: Outer diameter from 20mm to 165mm; length 6m (customizable up to 12m).
- Surface Finish: Smooth, spangle-free silver gray finish, ready for painting or direct use.
- Certifications: Manufactured under ISO9001 quality management system.
- Applications: Greenhouse structural frames, fence posts, railings, scaffolding, and general construction.
| Parameter | Value |
|---|---|
| Steel Grade | Q235 (GB/T 700-2006 equivalent) |
| Wall Thickness | 1.5mm (±0.1mm) |
| Zinc Coating Weight | 60-100 g/m² (optional higher upon request) |
| Tensile Strength | ≥ 370 MPa |
| Yield Strength | ≥ 235 MPa |
| Elongation | ≥ 24% |
| Standard Length | 6m, 5.8m, or custom |
| End Finish | Plain ends, threaded, or grooved (optional) |
Advantages for Greenhouse & Fence Projects
- Corrosion Protection: The pre-galvanized coating prevents rust even in humid greenhouse environments, reducing maintenance costs.
- Lightweight yet Strong: 1.5mm thickness offers a good balance between weight and structural integrity, easy to transport and assemble.
- Easy Fabrication: Q235 steel can be cut, welded, and drilled without compromising the coating (use proper welding techniques).
- Cost-Effective: Compared to stainless steel, pre-galvanized pipes provide excellent value for large-scale agricultural projects.
- Versatile Use: Suitable for both curved and straight frame designs; can be used for fence posts, gates, and support structures.
Our factory in Liaocheng, Shandong, utilizes advanced production lines to ensure precise dimensions and consistent quality. Each batch undergoes strict quality control including thickness measurement, zinc coating inspection, and mechanical testing. We ship via Qingdao port to customers in North America, South America, Europe, Africa, and beyond.
Trust Hemaokang Steel – Your Reliable Partner for Steel Pipe Solutions
With over 51 employees dedicated to export excellence, we have served clients in more than 20 countries since our establishment in 2025. Our ISO9001 certification reflects our commitment to quality. We offer flexible packaging (bundles, slings, or boxed) and delivery terms (FOB, CIF, CFR). Contact us today for a quote or sample request.
Frequently Asked Questions
-
What is the difference between pre-galvanized and hot-dip galvanized?
Pre-galvanized pipes are coated with zinc before forming, resulting in a thinner, uniform coating. They are ideal for indoor or light outdoor use. For heavy-duty outdoor applications, we also offer hot-dip galvanized options. -
Can these pipes be used for drinking water supply?
No, these pipes are not designed for potable water. They are intended for structural and fencing applications. -
What is the minimum order quantity (MOQ)?
Standard MOQ is 5 tons per size. Smaller quantities are available for sample orders. -
How long does the coating last?
In typical atmospheric conditions, the zinc coating provides protection for 10-15 years. In aggressive environments (e.g., coastal areas), additional painting or a thicker coating is recommended. -
Do you provide threading or cutting services?
Yes, we can provide custom lengths, threading, and grooving upon request. Please specify your requirements when ordering. -
Can I get a sample before placing a bulk order?
Certainly. We can send a sample pipe (approx. 30cm) with freight collect. Contact our sales team for details. -
What payment terms do you accept?
We accept T/T (30% deposit, 70% before shipment) and L/C at sight. For long-term cooperation, negotiate other terms. -
How do you ensure the pipe is straight and free of defects?
Our production line includes straightening machines and visual inspection. Random samples are tested for roundness and straightness.
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