Galvanized Square Steel Pipe | Durable & Customizable Structural Solution

Galvanized square steel pipe combines the structural benefits of square hollow sections with the corrosion resistance of zinc coatings, making it ideal for outdoor and moisture exposed applications. The galvanization process—either hot dip (immersion in molten zinc) or electro galvanic (electrolytic deposition)—creates a protective layer that sacrificially corrodes ahead of the underlying steel, extending service life by 3–5 times compared to uncoated pipes. Hot dip galvanized pipes (Fe Zn alloy layer 15–30μm) are preferred for harsh environments (marine, industrial) due to their thicker, more adherent coating, while electro galvanized pipes suit mild climates with lower corrosion risk. Material choices include carbon steel grades like Q235A or ASTM A500 Grade B, with wall thicknesses 2–12mm to balance strength and weight. Common applications include: outdoor fencing, balcony railings, agricultural greenhouses, and light structural frames in coastal buildings. Installation considerations include avoiding coating damage during cutting/bending (touch up paint required for exposed edges) and ensuring proper drainage to prevent water accumulation inside the hollow section. International standards like EN 10240 (European galvanized steel tubes) specify coating thickness, adhesion, and uniformity, ensuring consistent performance across global markets.