... slope, muti slope; Single span, double-span, Multi-span, single floor, double floors!3) Base: Cement and steel foundation bolts4) Column ... skylight belts, Ventilators, down pipe, Glavanized gutter, etc9)Surface: Two lays of Anti-rust Painting!10) Packing: Main steel frame ... and windows6)Crane (if have) ,Crane span, crane lift height, max lift capacity, max wheel pressure and min wheel pressure! For ...