... structure ,prefab steel structure building/houses 2. high-quality products name:prefab steel structure,large-span steel structure ,prefab steel ... ... M is modular, 1M=2000mm)3Wall Height2870mm/3000mm4Floor beamC style steel, Q235, painted structure5ColumnDouble C style steel, Q235, ... truss, sealed by the C type steel7 Roof purlinC style steel, Q235, painted structure8Inclined braceround steel, material: ...