... .Finish:powder coat,polish,zinc plated,acid pickling light galvanized u frame steel beams1.Strictly quality control by 100% ... . In addition to CE and BV mark of the products, we have won quality certificate in accordance with ISO ... cutting,punching,bending,grinding,machining,threadingSurface finishingzinc plating, hot dipped galvanized, powder coat, e-coat, polishing,chrome plated,nickel platedAdvanced ...