Our hot-dip galvanized square steel tubes are cold-formed and ERW welded from high-quality carbon steel strip, then hot-dip galvanized at approximately 450 °C to form a dense protective coating on both the interior and exterior surfaces.
Core Selling Points: long-lasting corrosion resistance · no re-painting · high strength · fast installation. Widely used in construction, municipal works, agriculture, photovoltaics and machinery.
Why Choose Us
| Feature | Benefit |
|---|---|
| Long-lasting Corrosion Resistance | The hot-dip galvanized coating forms a zinc-iron alloy layer providing both barrier and cathodic protection, with 20–50 years of outdoor service life. |
| Full Coating Coverage | Zinc uniformly covers the inner/outer walls, corners and weld seams, eliminating bare spots and rust. |
| High Load-Bearing Strength | Square-section tubes offer excellent bending, compression and torsion resistance, ideal for columns, supports and main beams. |
| No Secondary Painting | The uniform, attractive surface needs no additional painting, saving labor and cost. |
| Flexible Customization | Sizes, wall thickness, zinc coating and length can all be customized per engineering drawings. |
| Low MOQ & Trial Orders | Sample orders and small trial orders supported to facilitate foreign trade and project supply. |
Quick Specifications
| Item | Specification |
|---|---|
| Shape | Square / Rectangular Hollow Section |
| Size Range | 20×20 mm – 600×600 mm |
| Wall Thickness | 0.5 – 30 mm |
| Steel Grade | Q235 / Q355B; ASTM A500; EN 10219 |
| Surface | Hot-Dip Galvanized |
| Coating Thickness | Approx. 55 – 85 μm, customizable |
| Length | 6 m / 12 m or cut to order |
| Standards | GB / ASTM / EN / JIS / AS/NZS |
Applications
Hot-Dip Galvanized Square Steel Tube is widely used in structural and industrial applications.
- Construction: frames, columns, curtain wall mullions, canopies
- Municipal & Traffic: guardrails, fences, street lamp posts, traffic facilities
- Agriculture: greenhouse frames, livestock enclosures
- New Energy: photovoltaic mounting structures, energy storage systems
- Machinery & Equipment: machine frames, racking, conveyor lines
- Home & Decoration: door/window frames, handrails, balcony guardrails
Quality Control & Supply Chain Capability
Tianjin Juming Steel Pipe Co., Ltd. maintains stable cooperation with major steel groups in China, including Baosteel Group, HBIS Group, Shougang Group, Ansteel Group, Shandong Steel Group and Jingye Group.
The company applies inspection procedures throughout raw material selection, production and final shipment. Steel pipes are supported by CNAS and CMA independent testing reports to verify product performance according to applicable standards.
Juming Steel also holds multiple AAA enterprise credit certificates, including:
- AAA Certificate of Enterprise Honoring Contracts and Keeping Promises
- AAA Certificate of Quality & Credit Enterprise
- AAA Certificate of Service & Credit Enterprise
- AAA Certificate of Quality Service Reputation Enterprise
- AAA Certificate of Excellent Integrity Supplier
- Certificate of Integrity Business Model Demonstration Unit
- Certificate of Integrity Manager
FAQ
Q: Can you customize products according to customer drawings?
Yes. We support custom sizes, wall thickness, zinc coating and length. Please send us your drawings or samples, and we will provide a professional proposal and quotation.
Q: How is quality ensured? Are test reports available?
We implement full-process inspection from raw material intake to final delivery. Mill Test Certificates are provided with each shipment, and third-party inspections such as SGS and BV are supported.
Q: What is the minimum order quantity (MOQ)?
The MOQ is negotiable. We support sample orders and small trial orders so you can verify quality before placing bulk orders.
Q: How can I get a quotation? What payment terms do you accept?
Please provide the size, steel grade, coating requirement, length, quantity and destination port. We will offer prompt FOB / CIF quotations and accept common export payment terms such as T/T and L/C.
Q: What is the lead time? Which port do you ship from?
In-stock standard sizes are about 7–15 days; custom sizes are agreed based on order and quantity. We mainly ship from Tianjin Port, supporting FCL, LCL and break-bulk transport.
Q: Do you provide samples?
Free samples are available. Freight is usually borne by the customer or refunded upon a bulk order.
About Us
Founded in 2015 in Daqiuzhuang, Jinghai District, Tianjin, Tianjin Juming Steel Pipe Co., Ltd. specializes in galvanized square tubes, rectangular hollow sections, plastic-coated steel pipes, steel-plastic composite pipes and anti-corrosion pipe products.
Located near major transportation routes and Tianjin Port, the company integrates steel pipe manufacturing, processing and export services. With established supply chain cooperation and professional production capabilities, Juming supports customized specifications and project-based requirements for international markets.
Contact Us
For Hot-Dip Galvanized Square Steel Tube specifications, customization requirements and export information, Tianjin Juming Steel Pipe Co., Ltd. welcomes technical inquiries from global markets.
| Item | Information |
|---|---|
| Company | Tianjin Juming Steel Pipe Co., Ltd. |
| Address | Pangjiazhuang Village, Daqiuzhuang Town, Jinghai District, Tianjin, China |
| Website | jumingsp.com / jumingsteel.com |
| Main Products | Galvanized square/rectangular tubes, plastic-coated pipes, steel-plastic composite pipes, anti-corrosion pipes |
| Cooperation | Custom processing · Small trial orders · Export |
