Galvanized Hollow Pipe

 

Galvanized hollow tube is made from carbon steel strips as the base material. After being cold-bent into hollow cross-section tubes, they undergo a galvanizing process to form a uniform zinc layer on both the inner and outer surfaces. Their hollow internal structure effectively reduces material weight while maintaining structural strength, offering advantages such as high strength, corrosion resistance, lightweight, and economy.

Galvanized hollow tubes include square, rectangular, and round hollow tubes, and are widely used in building structures, steel structure engineering, machinery manufacturing, fences and railings, photovoltaic supports, furniture, and light industrial fields.

 

 

 

 Excellent Corrosion Resistance

The galvanized hollow steel pipe has a dense zinc coating on both its inner and outer surfaces, effectively isolating it from air and moisture. Under normal atmospheric conditions, its service life can reach 15-20 years; in dry indoor environments or agricultural greenhouses, its lifespan is even longer. The naturally formed zinc oxide protective film on the zinc layer effectively isolates it from air, moisture, and acid/alkali corrosion.

 

 High Structural Strength and Lighter Weight
Compared to solid steel, hollow sections reduce weight while maintaining good load-bearing capacity. This lightweight characteristic significantly reduces costs during logistics and manual installation.

 

 Flexible Processing Performance

Galvanized pipe has a smooth surface, free from defects such as zinc nodules and incomplete galvanizing, facilitating secondary processing such as cutting, threading, bending, and stamping. Its excellent ductility makes it less prone to cracking or detachment during cold bending, flaring, and flattening. Cut surfaces can be repaired simply by applying cold-dip galvanized paint to restore its protective function.

 

 Outstanding Economic Efficiency

Compared to stainless steel pipes, galvanized steel hollowpPipe has a lower cost; compared to hot-dip galvanized solid pipes, it is lighter, making its overall cost more competitive. It can significantly reduce costs in large-scale engineering projects, making it particularly suitable for agricultural and municipal projects with limited budgets.

 

  Aesthetically Pleasing Appearance

After hot-dip galvanizing, the surface has a silvery-white luster with uniform zinc bloom, requiring no further polishing before application to visible areas. Some products can also undergo color zinc passivation to form a rainbow-colored passivation film, enhancing their decorative appeal.

 

 

Product Name	Galvanized Steel Hollow
Tube Type	Square Galvanized Hollow Tube, Rectangular Galvanized Hollow Tube, Round Galvanized Hollow Tube
Material	Q195,Q235,Q345,SPCC,S350GD,S450GD,S550GD
Processing Services	Bending, Welding, Punching, Cutting, Threading, Grooving, Shoulder
Galvanizing Method	Pre-galvanized / Hot-dip galvanized
Zinc Coating Weight	40 – 275 g/m²
Length	Standard length 6 m, 9 m, 12 m; customizable
Wall Thickness	0.75 mm – 6.0 mm
Outer Diameter	Round Tube: Φ10 mm – Φ219 mm; Square Tube: 10*10 mm – 200*200 mm; Rectangular Tube: 10*20 mm – 150*200 mm

 

 

1.Construction Industry:

Steel structure supports, roof trusses, curtain wall frames, railings, scaffolding, building columns, etc. For example, DN100 galvanized steel pipes provided by Chongqing Zhuoguang Materials are widely used in greenhouse frames and construction site scaffolding.

Municipal Engineering

Fire protection pipelines, water supply networks, gas transmission, cable conduits, street light poles, traffic sign poles, etc. Drinking water supply standards.

 

2.Agricultural Facilities

Greenhouse frames, sprinkler/drip irrigation systems, livestock fences, agricultural machinery frames, etc. Their lightweight and low cost make them suitable for large-scale installation.

 

3.Industrial Manufacturing

Machinery equipment supports, warehouse shelves, photovoltaic supports, solar water heater frames, ventilation ducts, equipment casings, etc.

 

4.Furniture Manufacturing

Metal bed frames, table and chair frames, display racks, wardrobe frames, etc. Can be directly sprayed or powder coated without additional anti-corrosion treatment.

 

5.Power and Telecommunications

Cable protection sleeves, utility pole support structures, communication base station construction, strong and weak current networks, etc.

 

 

 

1. Steel Strap Bundling

 Small outer diameter: Bundled packaging, secured with steel straps

 

 Large outer diameter: Bulk packaging

 

 Normal outer diameter: Bundled with eight heavy-duty steel straps, all bundles covered with waterproof plastic film, each bundle includes two lifting straps and two steel tags.

 

2.Waterproof Plastic Film Packaging

Selection Recommendations:

Outdoor/Hydraulic Environment: Choose zinc coating ≥275g/m², wall thickness ≥3.0mm

Coastal/Chemical Environment: Recommended zinc coating ≥500g/m²

Indoor/Dry Environment: Zinc coating 180-220g/m² is sufficient.