QIDAMT
Product Overview
Galvanized steel tube, also known as GI square or rectangular tube, is a hollow low carbon steel section coated with a hot-dip zinc layer for excellent corrosion resistance. With square and rectangular cross sections in wall thickness from 1.0 mm to 8.0 mm, our galvanized tubes combine high strength, light weight and easy fabrication, making them ideal for steel structures, fences, frames, guardrails and agricultural equipment.
Specifications
| Item | Specification |
|---|---|
| Material | Low carbon steel Q195 / Q235B |
| Standard | ASTM A500, GB/T 6728, EN 10219, JIS G3466 |
| Zinc Coating | Hot-dipped galvanized, 45 – 85 um |
| Type | Square tube / Rectangular tube |
| Size Range | 20 x 20 x 1.0 mm to 200 x 200 x 8.0 mm (square) |
| Wall Thickness | 1.0 mm – 8.0 mm |
| Length | 6 m / 9 m / 12 m or customized |
| Tolerance | Per standard |
| Surface | Smooth zinc coating, bright finish |
| Supply Form | Bundle with steel straps, plastic film protection |
Chemical Composition
| Element | Content (%) |
|---|---|
| C | <= 0.17 |
| Si | <= 0.35 |
| Mn | <= 1.40 |
| P | <= 0.045 |
| S | <= 0.045 |
| Fe | Balance |
Key Features
- Hot-dip galvanized for long-term corrosion protection
- High strength-to-weight ratio for structural use
- Square and rectangular sections with uniform wall thickness
- Easy to weld, cut and fabricate
- Smooth surface suitable for painting
- Available in 6 m, 9 m and 12 m lengths
Applications
- Steel structures, frames and supports
- Fences, gates, railings and guardrails
- Agricultural greenhouses and racks
- Solar panel mounting frames
- Furniture frames and display stands
- Machinery and general fabrication
Quality Control
All galvanized tubes are inspected for dimensions, wall thickness, zinc coating and surface quality before delivery. Mill test certificates are provided with each shipment, and third-party inspection by SGS, BV or TUV is available upon request.
Packaging & Shipping
| Item | Detail |
|---|---|
| Packaging | Bundle with steel straps, plastic caps, wooden blocks and plastic film |
| Shipping Marks | Product name, standard, size, quantity, net weight, destination port |
| Loading Port | Tianjin / Qingdao / Shanghai, China |
| Payment Terms | T/T 30% deposit + 70% before shipment, L/C at sight, D/P |
| Delivery Time | 15-25 days after deposit |
| MOQ | 5 tons per size |
| Trade Terms | FOB, CIF, CFR, EXW, DDP |
Why Choose Us
With more than 15 years of experience in metal product export, our factory supplies a full range of galvanized steel tubes with stable quality, competitive price and reliable delivery. A professional QC team ensures every bundle is inspected before shipment.
