China Hot Dipped Galvanized Square & Rectangular Steel Pipe Suppliers - Trustworthy Factory with 50,000 TONS Stock
Specifications
1
Processing Services: Bending, Welding, Decoiling, Cutting, Punching
2
Section Shape: Square
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Standard: ASTM, DIN, GB, JIS, GB/T3094-2000, GB/T6728-2002, ASTM A500, JIS G3466, DIN EN10210, or others
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Size: Thickness: 0.6mm to 20mm
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Length: 1m to 12m customizable
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Technique: Other, Hot Rolled, Cold Rolled, ERW, High-frequency welded, Extruded
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Processing Service: Welding, Punching, Cutting, Bending, Decoiling
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Delivery Time: In stock, ships immediately
| Size (mm) | Thickness (mm) | Size (mm) | Thickness (mm) |
|---|---|---|---|
| 20x20 | 0.7-2.0 | 25x50 | 0.7-2.0 |
| 25x25 | 0.7-2.0 | 30x50 | 0.7-2.0 |
| 30x30 | 0.7-2.0 | 30x60 | 0.7-2.0 |
| 40x40 | 0.7-3.0 | 40x50 | 0.7-3.0 |
| 50x50 | 0.7-3.0 | 40x60 | 0.7-3.0 |
| 60x60 | 0.7-3.0 | 40x80 | 0.7-3.0 |
| 70x70 | 1.0-3.0 | 50x100 | 1.0-3.0 |
| 75x75 | 1.0-3.0 | 60x120 | 1.0-3.0 |
| 80x80 | 1.0-3.0 | 50x150 | 1.0-3.0 |
| 90x90 | 1.0-3.0 | 75x125 | 1.0-3.0 |
| 100x100 | 1.0-3.0 | 80x120 | 1.0-3.0 |
| 120x120 | 1.0-3.0 | 80x160 | 1.0-3.0 |
| 150x150 | 1.0-3.0 | 100x200 | 1.0-3.0 |
| 160x160 | 1.2-3.5 | 150x200 | 1.2-3.5 |
| 200x200 | 1.2-3.5 | 150x250 | 1.2-3.5 |
| 250x250 | 1.2-3.5 | 150x300 | 1.2-3.5 |
| 300x300 | 2.0-5.0 | 200x300 | 2.0-5.0 |
| 400x400 | 2.0-5.0 | 200x400 | 2.0-5.0 |
Application
Galvanized square & rectangular tubes are made of high-quality carbon steel coil, formed by cold bending, welded and then hot-dip galvanized. The galvanized layer features strong adhesion, corrosion resistance, rustproof and long service life. With smooth surface, uniform zinc coating and good mechanical performance, they are widely used in construction framework, guardrail, engineering structure, pipeline support, warehouse shelf and steel structure projects.
Product Advantages
We supply high-quality galvanized square and rectangular steel tubes with consistent galvanizing thickness and stable mechanical properties. Strict quality control ensures precise dimension tolerance and uniform surface quality. With abundant stock, customizable processing services and fast shipment, our galvanized hollow sections are highly recognized by clients from Europe, Southeast Asia, Middle East and other global markets.
Custom sizes, special zinc coating thickness and customized cutting services are available. Feel free to contact us for wholesale price and technical parameters.
Product Display

Gi square pipe production line

Gi square pipe warehouse

Product Labels

Loaded into container

Transported to the port

In the port yard
Shipping Process
Free Quality Inspection Report
Exhibition

Exhibition 01

Exhibition 02

Exhibition 03

Exhibition 04

Exhibition 05

Exhibition 06
Company Certificate

CE

ISO14001:2015

ISO9001:2015

Alliance Member OF Tianjin Metal Materials Industry Association

Alliance of China Steel Export

China National Association of Metal Material Trade
FAQ
QAre you a manufacturer?
Absolutely. We are a direct manufacturer with our own large-scale facility located in Tianjin, China. You are more than welcome to visit us!
QCan I place a trial order for just a few tons?
Certainly. We value every partner regardless of the order size. We can easily arrange an LCL (Less than Container Load) shipment to accommodate your specific needs.
QIs the sample free of charge?
Yes, we provide samples for free so you can verify our quality. We only ask the buyer to cover the courier cost.
QHow long is the delivery time?
Most sizes are in stock and can be shipped immediately.
QWhat processing services do you provide?
We offer comprehensive processing services including bending, welding, decoiling, cutting, and punching to meet your customization requirements.
QWhat sizing standards do your steel tubes conform to?
Our products are manufactured according to ASTM, DIN, GB, JIS, GB/T3094-2000, GB/T6728-2002, ASTM A500, JIS G3466, DIN EN10210, and other international standards.













