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Hot Dip Galvanized Square and Rectangular Hollow Sections for Corrosion Resistant Structural Stability in Building Frames

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Hot Dip Galvanized Square and Rectangular Hollow Sections for Corrosion Resistant Structural Stability in Building Frames

Brand Name : talat

Model Number : Galvanized steel pipes

Certification : manufacture certificate

Place of Origin : China

MOQ : 1ton

Price : negotiate

Payment Terms : L/C,T/T,Western Union

Supply Ability : 10000tons

Delivery Time : 7-15days

Packaging Details : Standard seaworthy export packing or as customer demands

Product name : Zinc-coated Steel Square and Rectangular Tubes

End finish : Plain End, Beveled End

Material : Q195, Q215, Q235, Q355, ASTM A500, ASTM A36

Size : 20×20mm–400×400mm

Manufacturing Method : Roll Formed & High Frequency Welded

Zinc coating : 40 g/m² – 275 g/m²

Additional Services : Cutting, Drilling, Punching, Welding

Shape : square & rectangular

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Galvanized Square & Rectangular Hollow Sections for Building Frames and Industrial Fabrication
Product Description

Galvanized Square Hollow Sections (SHS) and Rectangular Hollow Sections (RHS) are versatile structural steel products designed to deliver outstanding strength, corrosion resistance, and long-term reliability. Manufactured from premium carbon steel and coated with zinc through advanced galvanizing processes, these hollow sections are engineered for demanding indoor and outdoor applications.

Available in a broad range of dimensions and wall thicknesses, galvanized hollow sections combine excellent mechanical performance with superior weather resistance. Their clean appearance, easy fabrication, and low maintenance requirements make them one of the most popular steel products in modern construction and infrastructure projects.

Cause

Many structural projects operate in environments where steel is continuously exposed to rain, humidity, temperature fluctuations, industrial pollutants, and chemical contaminants.

Without adequate protection, ordinary carbon steel tubing can experience:

  • Rapid oxidation and rust formation
  • Reduced load-bearing performance
  • Surface deterioration and aesthetic damage
  • Frequent repair and repainting requirements
  • Increased lifetime operating costs

For engineers, contractors, and project owners, corrosion protection has become a critical factor when selecting structural steel materials.

Solution

Galvanized hollow sections offer a proven method of protecting steel against environmental degradation.

By applying a zinc coating to the surface of the steel tube, the material gains long-lasting resistance to corrosion while maintaining its structural integrity.

Key Advantages
  • Outstanding anti-corrosion performance
  • Excellent structural stability
  • Longer service life than untreated steel
  • Reduced maintenance expenses
  • Suitable for harsh outdoor environments
  • Strong resistance to moisture and oxidation
  • Cost-effective over the entire project lifecycle

This protective system enables steel structures to remain reliable even in coastal, industrial, and high-humidity environments.

Product Specifications
Parameter Details
Material Q195, Q235B, Q355B (or equivalent)
Size range 20x20mm, 25x25mm, 30x30mm, 40x40mm, 50x50mm, 60x60mm, 80x80mm, 100x100mm, 150x150mm, 200x200mm
Wall thickness 1.0mm – 5.0mm (custom available)
Length 6m, 5.8m, or customized (max 12m)
Zinc coating thickness 45µm – 90µm (as per ASTM A123 / EN ISO 1461)
Standard ASTM A500, EN 10219, GB/T 6728
Surface treatment Hot dip galvanized, smooth and bright
Tolerance According to international standard

Note: Custom sizes, thicknesses, and higher zinc coating can be produced upon request.

Common Square Tube Sizes
  • 20*20 mm
  • 25*25 mm
  • 40*40 mm
  • 50*50 mm
  • 75*75 mm
  • 100*100 mm
  • 150*150 mm
  • 200*200 mm
  • 300*300 mm
  • 400*400 mm
Common Rectangular Tube Sizes
  • 20*40 mm
  • 30*50 mm
  • 40*80 mm
  • 50*100 mm
  • 80*120 mm
  • 100*150 mm
  • 200*100 mm
  • 250*150 mm
  • 400*200 mm
  • 1000*800 mm
Packaging & Delivery
  • Packing (Bundles / Seaworthy Packaging)
  • Tagging
  • Weight Checking
  • Trucking / Shipment
Hot Dip Galvanized Square and Rectangular Hollow Sections for Corrosion Resistant Structural Stability in Building Frames
Hot Dip Galvanized Square and Rectangular Hollow Sections for Corrosion Resistant Structural Stability in Building Frames
How To Choose

Selecting the appropriate galvanized hollow section depends on engineering requirements and environmental conditions.

For Light Structural Applications

Recommended:

  • 20*20 mm – 80*80 mm
  • Thickness 1.0–3.0 mm

Suitable for:

  • Furniture frames
  • Greenhouses
  • Lightweight structures
For Medium Structural Applications

Recommended:

  • 100*100 mm – 200*200 mm
  • Thickness 3.0–8.0 mm

Suitable for:

  • Workshops
  • Warehouses
  • Commercial buildings
For Heavy-Duty Engineering

Recommended:

  • 250*250 mm and above
  • Thickness 8.0–16 mm

Suitable for:

  • Industrial plants
  • Large steel structures
  • Infrastructure projects
Additional Selection Factors
  • Corrosion environment
  • Structural load requirements
  • Service life expectations
  • Fabrication methods
  • Budget considerations
FAQ
Q1: Why are galvanized hollow sections preferred over painted steel tubes?

Galvanized tubes provide integrated corrosion protection throughout the entire surface, while paint coatings can crack, peel, or require regular maintenance.

Q2: Are galvanized square tubes suitable for coastal projects?

Yes. Hot-dip galvanized square tubes perform exceptionally well in coastal and marine environments due to their thick zinc coating and sacrificial protection properties.

Q3: What is the difference between SHS and RHS?

SHS refers to Square Hollow Sections with equal side dimensions, while RHS refers to Rectangular Hollow Sections with unequal side dimensions.

Q4: Can galvanized rectangular tubes be fabricated after purchase?

Yes. They can be cut, drilled, bent, welded, and assembled according to project requirements.

Q5: What zinc coating thickness should I choose?

For indoor projects, lighter coatings may be sufficient. For outdoor, industrial, or marine environments, a zinc coating of 120–275 g/m² is generally recommended for enhanced durability.


Product Tags:

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