Hot-dip galvanized steel pipe is a metal pipe treated by high-temperature zinc dipping process. It has excellent corrosion resistance and long life and is widely used in construction, municipal and industrial fields. Its production process includes pickling and rust removal, solvent treatment, high-temperature zinc dipping (about 450℃) and cooling and solidification. The zinc liquid reacts with the surface of the steel pipe to form a dense zinc-iron alloy layer with a thickness of usually 50-150 microns, which can effectively isolate air and moisture and prevent rust.

Hot-dip galvanized steel pipe has significant advantages:

Strong weather resistance: Adapt to harsh outdoor environments such as humidity, acid and alkali, and the service life can reach 20-50 years;

Good mechanical properties: Retain the high strength of steel while also having zinc layer protection;

High cost performance: Lower cost than stainless steel pipes, suitable for large-scale engineering use.

Mainly used in water pipelines, fire protection systems, scaffolding, municipal guardrails and agricultural greenhouse supports. When choosing, you need to pay attention to the wall thickness (such as SCH 10, SCH 40), pipe diameter (1/2 inch to 12 inches) and implementation standards (such as GB/T 3091, ASTM A53).

Note: Avoid mechanical damage that may cause the zinc layer to fall off, and check and repaint regularly; store in a dry and ventilated place to prevent the zinc layer from oxidizing and producing white rust. Hot-dip galvanized steel pipes are still one of the core materials for anti-corrosion engineering due to their reliable performance and economy.