Material Specification
Crafted from high-grade Q235 carbon steel (or customizable to galvanized steel, stainless steel per client needs), our square iron undergoes a multi-step surface treatment process. Hot-dip galvanization is applied to the base steel, forming a thick, uniform zinc coating that creates a sacrificial barrier against rust, corrosion, and chemical erosion. This material selection balances superior strength and cost-effectiveness, making it ideal for long-term outdoor and heavy-load usage.
Technical Parameters
|
Parameter |
Specification |
|
Cross-sectional Dimension |
20×20mm–100×100mm (custom sizes available) |
|
Wall Thickness |
1.2mm–5.0mm |
|
Length |
3m, 6m, 12m (cut-to-order options) |
|
Surface Treatment |
Hot-dip galvanized (≥85μm coating thickness) |
|
Tensile Strength |
≥375MPa |
|
Yield Strength |
≥235MPa |
|
Tolerance |
±0.5mm (dimension), ±0.1mm (thickness) |
Product Advantages
Exceptional Durability:
The galvanized coating resists rust and corrosion for over 10 years in normal outdoor environments, eliminating frequent maintenance costs.
01
High Load Capacity:
Precision cold-formed manufacturing ensures uniform wall thickness and structural integrity, supporting heavy payloads without deformation.
02
Versatile Compatibility:
Available in multiple sizes and customizable lengths, it fits various trailer models and fabrication requirements.
03
Cost-Effective Solution:
Premium material and craftsmanship extend service life, reducing replacement frequency and overall operational costs.
04
Easy Installation:
Smooth surface finish and precise dimensional tolerance enable seamless welding, bolting, and integration into trailer structures.
05
Services
Customization Service:
We offer tailored dimensions, surface treatments, and cutting services to meet unique project needs.
Quality Assurance:
Each batch of products undergoes rigorous testing for tensile strength, corrosion resistance, and dimensional accuracy before delivery.
Technical Support:
Our professional engineering team provides free consultation on material selection, structural design, and installation guidance.
Global Logistics:
We partner with reliable freight forwarders to deliver products to ports worldwide, offering door-to-door delivery options.
FAQ
Q: Can the square iron be used for marine trailer applications?
A: Yes. For marine environments, we recommend upgrading to 304 stainless steel or thickened hot-dip galvanized coating (≥120μm) to enhance saltwater corrosion resistance.
Q: What is the minimum order quantity (MOQ) for custom sizes?
A: The MOQ is 500kg for custom dimensions and lengths, with no MOQ for standard sizes.
Q: How to confirm the right size for my trailer project?
A: Please provide our team with your trailer's load capacity, frame design drawings, or the dimensions of any existing components, and we will recommend the best specifications for you.
Q: Do you provide certificates for the products?
A: Yes. We supply ISO 9001 quality certification, material test reports (MTR), and SGS corrosion-resistance test certificates for all shipments.
Hot Tags: square iron, China square iron manufacturers, suppliers, Axis Tie Rod Pin, Balance Beam Inner Sleeve, Lifting Iron Tension Spring, Square Iron, Square Iron Fixing Pin, suspension parts
