Products Description
Hot-Dip Galvanized Square & Rectangular Tubes
Premium Galvanized Square & Rectangular Tubes
Manufactured from high-quality carbon steel, our hot-dip galvanized square tubes offer superior corrosion resistance and structural stability. Featuring a uniform zinc coating and precise dimensional tolerances, these hollow sections deliver an excellent strength-to-weight ratio. Widely used in construction frameworks, machinery manufacturing, and infrastructure projects, they ensure long-lasting durability with minimal maintenance.
Comprehensive Range of Sizes & Thicknesses
We maintain a vast inventory of galvanized square and rectangular tubes to meet diverse project requirements. Our product range covers outer dimensions from 20x20mm up to 300x300mm, with wall thicknesses ranging from 1.0mm to 12.0mm. Whether you need standard SCH40/SCH80 schedules or customized dimensions for specific structural loads, our precise cold-forming technology ensures strict dimensional tolerances and consistent quality across every batch.
Superior Surface Finish & Export Packaging
The hot-dip galvanizing process provides our tubes with a smooth, uniform silver-gray coating (regular or minimized spangle), free from bare spots, blisters, or rough edges. To ensure the products arrive at your destination in perfect condition, we employ robust export-standard packaging. Bundles are securely fastened with heavy-duty steel straps, and protective end caps are applied to prevent physical damage and moisture ingress during long-distance ocean freight.
Precision Dimensions & Flawless Finish
Quality lies in the details. Our square tubes feature flat, burr-free cut ends and strictly controlled outer dimensions. The surface presents a smooth, uniform silver-gray finish (regular or minimized spangle), free from bare spots, blisters, or rough edges. Every batch undergoes rigorous hydrostatic and flattening tests, ensuring 100% compliance with international standards like ASTM and EN.
| Item | Specification | Application |
|---|---|---|
| Material | Q195 / Q235B Carbon Steel | General structure, fence project |
| Standard | GB/T 3094, ASTM A500 | Export engineering orders |
| Size Range | 20×20mm ~ 150×150mm | Solar support frame |
| Wall Thickness | 1.2mm ~ 5.0mm | Warehouse racking |
| Zinc Coating | 80g/m² ~ 120g/m² | Outdoor anti-rust scenarios |
| Length | 6m / Custom cut | Construction framework |
| End Type | Plain End | Welding assembly |
| Certificate | CQC, RoHS | Global export |
|
Section Size (mm) |
Wall Thickness (mm) |
Theoretical Weight (kg/m) |
Standard Length |
|---|---|---|---|
|
20 x 20 |
1.0 - 2.0 |
0.59 - 1.21 |
6m / 12m / Custom |
|
40 x 40 |
1.5 - 3.0 |
1.78 - 3.45 |
6m / 12m / Custom |
|
50 x 50 |
1.5 - 4.0 |
2.22 - 5.72 |
6m / 12m / Custom |
|
100 x 100 |
2.0 - 6.0 |
6.03 - 17.46 |
6m / 12m / Custom |
|
150 x 150 |
3.0 - 8.0 |
13.54 - 35.42 |
6m / 12m / Custom |
|
200 x 200 |
4.0 - 10.0 |
24.04 - 59.16 |
6m / 12m / Custom |
(Note: Rectangular sizes (e.g., 40x60, 50x100, 100x200) are also available. Custom lengths and specific zinc coating weights are supported upon request.)
Applications of Galvanized Square & Rectangular Tubes
Comprehensive Solutions for Diverse Industries Thanks to their exceptional strength-to-weight ratio, superior torsional rigidity, and outstanding corrosion resistance, our hot-dip galvanized square and rectangular tubes are extensively utilized across a wide range of critical industries. The hollow structural sections (HSS) provide reliable support and longevity, making them the preferred choice for engineers and contractors worldwide.
Construction & Architecture: Widely used as primary load-bearing columns, roof trusses, and space frames in commercial buildings, airports, and stadiums. The smooth, aesthetic silver-gray finish also makes them ideal for modern architectural facades, handrails, and decorative structures without the need for further painting.
Machinery & Equipment Manufacturing: The precise dimensional tolerances and high weldability of our tubes make them perfect for fabricating heavy-duty machinery frames, conveyor systems, agricultural equipment, and automotive chassis. They offer excellent stability under dynamic loads and vibrations.
Infrastructure & Energy Projects: Essential components in solar photovoltaic (PV) mounting systems, highway guardrails, street lighting poles, and transmission towers. The thick zinc coating ensures decades of maintenance-free service in harsh outdoor and coastal environments.
Agriculture & Greenhouses: The standard material for constructing modern greenhouse frameworks, irrigation systems, and livestock fencing, providing robust protection against humidity and chemical fertilizers.
|
Application Area |
Specific Uses |
Key Advantages of Our Tubes |
|---|---|---|
|
Building Construction |
Steel structures, roof trusses, columns, handrails |
High load-bearing capacity, aesthetic finish, fire resistance |
|
Machinery Manufacturing |
Equipment frames, conveyor systems, automotive chassis |
Precise dimensions, excellent weldability, vibration resistance |
|
Solar & Energy |
PV mounting systems, transmission towers, street lights |
Superior corrosion resistance, long service life (20-30 years) |
|
Infrastructure |
Highway guardrails, bridges, fencing |
High impact strength, low maintenance cost |
|
Agriculture |
Greenhouse frames, irrigation pipes, livestock pens |
Resistance to humidity and agricultural chemicals |
Certifications & Quality Assurance
🏆 Certifications & Quality Assurance
Uncompromising Quality, Globally Recognized We strictly adhere to international quality management systems and manufacturing standards. Every batch of our galvanized square and rectangular tubes undergoes rigorous testing and is backed by comprehensive documentation, ensuring full traceability and compliance for your critical projects. To guarantee your absolute peace of mind, we fully welcome and facilitate third-party inspections prior to shipment.
Our Core Certifications & Documentation:
ISO 9001:2015: Certified Quality Management System for consistent manufacturing excellence.
Mill Test Certificate (MTC): EN 10204 3.1 provided with every shipment, detailing chemical composition and mechanical properties.
Third-Party Inspection Reports: Full cooperation with globally recognized agencies such as SGS, BV, and TUV.
Standard Compliance: Products strictly manufactured to meet ASTM, EN, JIS, and GB standards.
FAQ
Q:Who are we?
A: We are based in Tianjin, China, start from 2014,sellto Domestic Market(23.00%), Mid East(20.00%),South America(10.00%),Southeast Asia(10.00%),Africa10.00%,Eastern Asia(10.00%).South Asia(10.00%)North America(2.00%).Eastern Europe(2.00%)0ceania(2.00%),Northern Europe(1.00%)
Q:: What can you buy from us?
A: Steel Plate, Steel Coil, Galvanized Pipe, Angle Bar, Galvanized Coil.
Q:Why should you buy from us not from other suppliers?
A: We are an integrated production and sales company, which makes the price we sell to you lower.There are no middlemen taking a cut. We can offer you a perfect quality guarantee. Our company passed the S0900 .SGS international quality system authentication and set up perfect marketing system and customer service network.
Q: How can we guarantee quality?
A: Always final Inspection before shipment;
Q:What services can we provide?
A: Accepted Delivery Terms: FOB,CIF;Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;Accepted Payment Type: T/T, Western Union;Language Spoken:English,Chinese,Spanish, Japanese,Portuguese,German,Arabic, French,Russ.
Inquiry & Quotation: Send us your requirements (size, standard, quantity). We will provide a detailed quote within 24 hours.
Confirmation & Contract: Once the price and specifications are agreed upon, we will issue a Proforma Invoice (PI) for your confirmation.
Deposit & Production: After receiving the 30% deposit, we immediately arrange production or reserve stock for you.
Inspection & Balance: We provide photos, videos, or Mill Test Certificates (MTC) for your approval. Upon receiving the 70% balance, we ship the goods.
Delivery & Support: We handle all shipping documents and provide ongoing technical support after you receive the goods.
Our address
Tianjin Youcheng Technology Co., Ltd.
Phone Number
+8613072013843
tina@youchengkjsteel.com
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