Product namesteel structure prefabricated housesMain ComponentsSurface TreatmentBaseCement and steel foundation boltsHot dip galvanize1.Standard: JIS, DIN, ASTM B695-2000Main frameH beam2.Hot dip galvanizing hole cutting good looking on surface ofPurlinC or z purlin: Size from C120~C320, Z100~Z203.Galvanizing process:   Steel structural components →Degreasing →Rinsing→ Pickling →Rinsing → Fluxing → Galvanizing →Quenching → (Passivation) → Inspecting →Finished ProductBracingX-type or other type bracing made from angle, round pipe, etcBoltPlain bolt and High-strength boltPaint1.Primer paint one coat 20-30 umRoof &wallSandwich panel or color plate2.Middle paint two coat 40-60 umDoorSliding or rolling door3.Finish paint one coat 20-30 umWindowAluminum alloy windowPaint type1.red primerSheet0.5mm or 0.6mm galvanized sheet2.zinc primerAccessoriesSemi-transparent skylight belts,Ventilators, down pipe, Galvanized gutter, etc3,Alkyd primer