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 galvanized pipes have a thicker zinc coating, offering uniform coating, strong adhesion, and a long service life. Electro-galvanized pipes are cost-effective but have a less smooth surface and are much less corrosion-resistant than hot-dipped galvanized pipes.