... 2.Finish:powder coat,polish,zinc plated,acid pickling light galvanized u frame steel beams1.Strictly quality control by ... in various ways. In addition to CE and BV mark of the products, we have won quality certificate in ... machining,threadingSurface finishingzinc plating, hot dipped galvanized, powder coat, e-coat, polishing,chrome plated,nickel platedAdvanced equipments2000T hydraulic press machine ...