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  • Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube
  • Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube
  • Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube
  • Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube
  • Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube
  • Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube
Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube

Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube

  • 5 - 9 Tons
    $560.10
  • >= 10 Tons
    $535.10

Customization:

Customized logo（Min.Order: 25 pieces）
Customized packaging（Min.Order: 25 pieces）
Graphic customization（Min.Order: 25 pieces）
View product details

Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Structural Support & Framework Construction: Designed to provide robust load-bearing capabilities for building frameworks, scaffolding, and industrial structures due to its square cross-section and high-strength steel composition.
  • Corrosion Resistance: Zinc-coated (GI) and galvanized surfaces ensure durability in harsh environments, extending service life in outdoor or corrosive settings.

Key features

  • 1. Corrosion-Resistant Zinc-Coated Steel

    • With zinc-coated galvanized steel, you can achieve superior corrosion resistance compared to uncoated steel, ensuring longevity in harsh outdoor or industrial environments.*

  • 2. Square Cross-Section for Seamless Assembly

    • With square cross-sections, you can align and stack components seamlessly, simplifying assembly processes and outperforming round pipes in structural projects.*

  • 3. High-Strength Structural Integrity

    • With high-strength S355J2H steel, you can handle loads exceeding 200 MPa, outperforming standard grades in demanding construction and infrastructure applications.*

  • 4. CE-Certified Safety Compliance

    • With CE certification, you can ensure compliance with EU safety standards, streamlining approvals for international construction and industrial projects.*

  • 5. Thick-Wall Design for Industrial Rigor

    • With thick-walled construction and API pipe compatibility, you can meet extreme industrial demands (e.g., oil rig frameworks), surpassing thinner-walled alternatives in pressure and load resistance.*

Product details

Structure Zinc Coated GI Tube square Hollow Galvanized Welded Steel Pipe Metal Rectangular Tube Price Galvanized square Tube

Structure Zinc Coated GI Square Hollow Galvanized Welded Steel Pipes are engineered for durability and precision, offering robust structural support across construction, industrial, and engineering applications. Crafted from non-alloy steel with CE certification, these tubes feature zinc coating, hot-rolled surfaces, and customizable finishes to enhance corrosion resistance and adaptability.

Technical specifications

FeatureSpecificationApplication Scenario
Material CompositionNon-alloy steel (Grades: S355J2H, S355J0H, A500, S355JRH)Heavy construction frameworks, load-bearing structures
Cross-Section DesignSquare/rectangular hollow sections (Customizable dimensions)Modular construction, machinery components
Surface TreatmentZinc-coated (GI), hot-rolled, black painted, or oiledMarine environments, outdoor infrastructure
CertificationCE compliantEU-standardized structural projects
Manufacturing TechniqueERW (Electric Resistance Welded), SSAW, or LSAWHigh-volume production of seamless structural tubes
Tolerance±1%, ±5%, or ±10% (Customizable)Precision engineering and assembly

Customization guide

Adjustable parameters include wall thickness (from 2mm to 12mm), section dimensions (up to 200x200mm), and surface finishes (e.g., galvanization levels, paint colors) to meet specific load requirements, environmental exposure, or aesthetic needs.

Get inspired

With square hollow sections and customizable wall thicknesses, these tubes excel in applications requiring both strength and versatility—think load-bearing scaffolding, industrial machinery frames, or corrosion-resistant offshore platforms.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Strength GradeS355J2H (410 MPa)S355JRH (440 MPa)S355J2G3 (470 MPa)
Corrosion ResistanceZinc coating (80µm)Enhanced galvanization (120µm)Triple-layer galvanization (200µm)
Processing OptionsCutting, bending+Punching, welding+Full-service fabrication
Tolerance±5%±2%±1%

Supplier's note

  1. Breakthrough Features:

    • The Pro Model’s triple-layer galvanization provides 30% greater corrosion resistance than industry standards, ideal for marine or chemical environments.
    • Advanced ERW technology in the Pro Model ensures seamless joints, reducing failure risks in high-stress applications.
    • Tight ±1% tolerance in the Pro Model enables precision assembly in aerospace or robotics frameworks.

  2. Version Selection Guide:

    • Base Model: Suitable for standard construction projects (e.g., residential scaffolding) where cost-efficiency is prioritized.
    • Advanced Model: Optimal for industrial machinery and moderate corrosive environments (e.g., factory equipment).
    • Pro Model: Recommended for heavy-duty applications like offshore platforms or high-pressure pipelines, where extreme durability and precision are critical.

With the Pro Model’s 470 MPa tensile strength and triple-layer galvanization, you can safely handle corrosive chemicals while maintaining structural integrity. Pair this with its ±1% tolerance for seamless integration into precision-engineered systems.

Frequently asked questions

  • Which square steel tube model suits heavy-duty construction projects?

  • How do I maintain a galvanized square steel tube to prevent corrosion?

  • What’s the difference between GI square tubes and stainless steel for outdoor structures?

  • Can square steel tubes be customized for unique project requirements?

  • Are zinc-coated square steel tubes compliant with international standards?

  • What makes thick-walled square steel tubes suitable for load-bearing structures?

  • Should I choose zinc-coated or black-painted square tubes for aesthetics?

  • How does ERW welding improve the quality of square steel tubes?

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🏗️ Construction Project Manager Review

⭐⭐⭐⭐⭐ James Whitaker - Civil Engineering Contractor
"We specified the Pro Model S355J2G3 square steel tubes for a coastal warehouse project, and they’ve performed flawlessly. The triple-layer galvanization (200µm) has held up against salt spray with zero signs of corrosion after 7 months. Welding was seamless thanks to the ERW precision, and the ±1% tolerance made structural alignment effortless. Worth every penny for high-exposure environments."

Purchase Date: February 2025 | Usage Period: 7 months

🛠️ DIY Enthusiast Review

⭐⭐⭐⭐☆ Emily Tran - Home Renovation Hobbyist
"Used the Base Model S355J2H for a backyard pergola and garden trellis. The zinc-coated finish looks clean, and cutting them to size with a metal saw was straightforward. I appreciate that they came pre-galvanized—no extra rust protection needed. Only reason for 4 stars is that detailed dimension charts could be clearer on the website."

Purchase Date: October 2024 | Usage Period: 5 months

🏭 Industrial Fabrication Engineer Review

⭐⭐⭐⭐⭐ Dmitri Volkov - Machinery Frame Fabricator
"For industrial machine frames, we need both strength and weldability. The Advanced Model (S355JRH, 120µm galvanization) delivers both. We’ve used it in aggressive workshop conditions—coolant exposure, humidity, heavy vibration—and the coating hasn’t chipped. The +punching and welding customization saved us 30% in post-processing time. CE certification also simplified our compliance audit."

Purchase Date: April 2024 | Usage Period: 8 months

🌉 Infrastructure Development Consultant Review

⭐⭐⭐⭐⭐ Amina El-Sayed - Structural Consultant
"Specified these thick-walled GI square tubes for pedestrian bridge supports in a municipal project. The 470 MPa tensile strength (Pro Model) gave us the safety margin we needed, and hot-dip galvanizing met JIS G3466 standards. Inspectors noted the uniform weld seams and precise dimensional consistency—rare in mass-produced structural steel. Will use again for bridge railings."

Purchase Date: June 2024 | Usage Period: 6 months

🚜 Agricultural Equipment Builder Review

⭐⭐⭐⭐☆ Luca Moretti - Farm Equipment Workshop Owner
"Built several livestock handling frames using the Base Model with black painted finish. Looks sharp on-site and resists mud corrosion better than I expected. Custom cutting to 1.8m lengths was handled perfectly by the supplier. Only downside: delivery took 10 days due to high order volume. But the product quality made up for it."

Purchase Date: January 2025 | Usage Period: 4 months

📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 76 reviews (85.4%)
  • ⭐⭐⭐⭐☆ (4-star): 11 reviews (12.4%)
  • ⭐⭐⭐☆☆ (3-star): 2 reviews (2.2%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Structural Engineering Expert Recommendation

Dr. Rajiv Mehta - Senior Structural Engineer & Consultant
"Having reviewed hundreds of steel components for infrastructure projects, I confidently recommend this product line—especially the Pro Model with CE and BS compliance. The combination of S355-grade steel, ERW integrity, and triple-layer galvanization sets a benchmark for durability in corrosive and load-intensive applications. Ideal for bridges, offshore platforms, and seismic-resistant frameworks."

Sustainable Construction Advisor Recommendation

Clara Nguyen - Green Building Materials Specialist
"These galvanized square tubes offer excellent lifecycle value. Their long-term corrosion resistance reduces maintenance and replacement frequency, aligning with sustainable construction goals. The recyclable non-alloy steel and low-emission surface treatments make them a smart choice for eco-conscious developers."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Precision Meets Durability" - Nathan Cruz (Industrial Contractor)

Posted: 2 days ago

"Used the Pro Model for robotic assembly line supports. The ±1% tolerance ensured perfect alignment with CNC fixtures. No warping, no coating flaking—just solid performance."

⭐⭐⭐⭐⭐ "Reliable Supply for Large Project" - Sofia Ivanova (Construction Procurement Lead)

Posted: 1 week ago

"Ordered 420 units for a warehouse expansion. All arrived on time, with consistent quality and full certification documentation. Will be our go-to supplier for structural steel."

⭐⭐⭐⭐☆ "Great for Custom Builds" - Jordan Lee (Metal Fabricator)

Posted: 3 weeks ago

"Custom bending and cutting services were accurate. Only suggestion: add online design upload for complex fabrication specs."

🎯 Reviews by Use Case Category

🏗️ Commercial Construction (38 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
    • High load-bearing capacity (95% mentioned)
    • CE certification compliance (90% mentioned)
    • Corrosion resistance in outdoor builds (88% mentioned)

🛠️ Home & DIY Projects (24 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
    • Ease of cutting and welding (82% mentioned)
    • Cost-effective customization (79% mentioned)
    • Rust protection for outdoor use (85% mentioned)

🏭 Industrial & Machinery (27 Reviews)

  • Average Rating: 5.0/5
  • Most Praised Features:
    • Precision tolerances (±1%–±2%) (100% mentioned)
    • Seamless ERW welds (96% mentioned)
    • Compatibility with heavy-duty fabrication (93% mentioned)

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