... of steel structure warehouse : color corrugated steel sheet with hot dip galvanized and paintingRoof panel of steel structure ... heavyWhat we can supply1.design 1)our engineer with more than 10 years of steel structure buildingdesign suitableblueprint 100 ... bolts, normalbolts,bracket bolts, shearing bolts, high strengthen bolts,nuts, plates,washers ,flange, tension rod ,crane etc.