Premium Galvanized Square Tube Supplier | Pre-galvanized & Hot-dipped | All Sizes in Stock
Wall Thickness: 1.5-30 mmOuter
Diameter: 20*20-200*200 mm
Length: 1-12m
Surface：Mild steel plain finish, hot dip galvanized, color coated, etc
Standard：ASTM，AISI，JIS,GB， DIN,EN
Products can be customized
Email: [email protected]
WhatsApp/WeChat/Mobile：+86-18753135285
Galvanized Steel Square Tube performance parameters
| Product Name | Galvanized Steel Square Tube |
|---|---|
| Material | Carbon steel: Q195-Q420Series, SS400-SS540Series, S235JR-S355JR Series, ST Series, A36-A992 Series, Gr50 Series, etc. |
| Model | Wall Thickness: 1.5-30 mm Outer Diameter: 20*20-200*200 mm Length: 1-12m |
| Surface Treatment | Mild steel plain finish, hot dip galvanized, color coated, etc. |
| Zinc coating | 30-275g/m2 |
| Standard | ASTM DIN GB ISO JIS BA ANSI |
| Place of Origin | Shandong, China |
| Delivery time | Within 10-15 workdays, 25-30 days when the quantity beyond 1000 tons |
| Certificate | API5L, ISO 9001:2008, SGS, BV, CCIC,CE |
| Supply capacity | 20,000 tons/year |
| MOQ | 1 ton |
| Trade Terms | FOB, CIF, CFR, EXW, FCA, FAS, etc. |
| Payment | TT, LC, We can negotiate |
| Tests | Chemical Component Analysis, Mechanical Properties, Technical Properties, Exterior Size Inspection, hydraulic testing, X-ray Test. |
| Application | 1) Pipeline 2) Suitable for mechanical equipment, solar energy equipment 3) Steel Structure Engineering, Bridge Fence 4) Auto Accessories |
| Advantages | 1.Reasonable price with excellent quality 2.Abundant stock and prompt delivery 3.Rich supply and export experience, sincere service 4.Reliable forwarder, 2-hour away from port. |
Advantages of OurGalvanized Steel Square Tube
Dual Protection of Structural Strength and Corrosion Resistance
Our galvanized square tubes combine the physical properties of high-strength carbon steel with the chemical protection of hot-dip galvanizing. Both internal and external walls are coated with a uniform zinc layer, effectively solving the common rust problem inside closed profiles. Whether in high-load construction frames or outdoor structures exposed to the atmosphere, they ensure decades of structural safety and anti-corrosion life.
Precise Dimensional Control and Excellent Machinability
Using advanced roll forming and high-frequency welding, we ensure precise cross-sectional dimensions and smooth R-angle transitions. This high precision greatly simplifies cutting, drilling, and assembly during construction. The zinc layer offers exceptional adhesion and does not easily flake during machining, significantly boosting the production efficiency of prefabricated components.
Cost-Competitive and Maintenance-Free Solution
Compared to traditional steel pipes that require regular de-rusting and painting, our pre-galvanized or hot-dipped square tubes provide a “one-step” solution. Their low initial cost combined with near-zero post-maintenance expenses makes them the most cost-effective choice for greenhouses, solar brackets, and municipal projects, significantly lowering the total life-cycle cost.
Packaging style of Galvanized Steel Square Tube
FAQs
Which international standards do your stainless steel sheets comply with, and can you provide an MTC?
Our products are strictly manufactured according to ASTM, AISI, JIS, and EN standards. A Mill Test Certificate (MTC) is provided with every shipment, detailing the chemical composition and physical properties to ensure 100% material compliance.
How do you ensure the surface remains scratch-free during processing and transportation?
We provide single or double-layer PVC/Laser film (e.g., Novacel or Nitto) based on your requirements. For mirror and brushed finishes, we apply reinforced edge protection and use export-standard wooden crates to prevent impacts and scratches.
Do you support non-standard size cutting and special surface finishes?
Yes. Equipped with advanced laser cutting, slitting, and leveling machines, we offer high-precision custom sizing. We also support specialized processes like etching, embossing, and PVD color coating to meet your specific design requirements.
Can I request a sample for lab testing before placing a bulk order?
We welcome sample testing. Free standard samples (e.g., A4 size) are available upon request, with only the courier cost covered by the client. This allows you to verify corrosion resistance and surface quality before committing to a bulk order.
What is your MOQ, and what is the typical lead time for delivery?
For regular stock grades (e.g., 304/316L), we have no strict MOQ. Standard orders are typically produced and ready for shipment within 7-15 working days. For large-scale custom orders, we will negotiate the best possible lead time based on specifications.
Ready to Secure Your Next Project?
Whether you need a bulk wholesale quote or a custom engineering solution, our technical team is here to help. Fill out the form and we will get back to you within 24 hours.