... Steel purlin, is made from hot-dipped galvanzed steel strip, is widely used in steel structure houses and easy to install. 1)Product: Steel ... Purlin2)Material: Hot-dipped Galvanized Steel Strip3)Steel Grade:Q235,Q3454)Zinc coating: ... -corrosion, mass production,competitive in price8)Main application: steel structure houses, ceiling board, roof structure, etc9)Specifications ...