Materials commonly used for greenhouse frames are galvanized pipes.

Galvanized steel pipes, also known as galvanized钢管, are available in two types: hot-dipped and electro-galvanized. Hot-dipped zinc has thicker layers, offering advantages such as even coating, strong adhesion, and a longer service life. Electro-galvanized is more cost-effective but has a less smooth surface and is much less corrosion-resistant than hot-dipped zinc pipes.