A dozen of the galvanizing traces account for 88% (36,855 million sq. ft.) of the overall utilization of RoHS compliant passivation on zinc coated strip metal by the galvanizing traces surveyed. The new rolled sheet has comparatively low strength, the surface high quality is almost poor (having low oxidation and smoothness),Sino East Steel but the elasticity is nice, generally medium and thick plate. Hexavalent chrome is estimated to account for 70% (one zero one,412 million square feet) of the chrome passivation requirements of the galvanizing lines surveyed.
From the processing standpoint: hot rolling is scorching processing, sizzling rolling is rolling above the recrystallization temperature, if the hot rolled sheet will not be pickled, it is similar to the floor of many extraordinary steel sheets on the market,http://sinoeastsolar.com and has rust. Flash-butt welding is an excellent method of coil becoming a member of. Besides transporting supplies, pipes are also used as scaffolding to help folks and materials in construction and repair of workplace buildings, houses, and other constructions.