corrugated roof sheeting prices,galvanized steel,iron roofing sheet,hot dip steel

corrugated roof sheeting prices is dropping recently,for the galvanized steel,iron roofing sheet,hot dip steel, dip the thin steel sheet into the molten zinc tank, make its surface adhere to a layer of zinc thin steel sheet.galvanized steel,iron roofing sheet,hot dip steel use of continuous galvanized process production, that is, the roll of galvanized steel,iron roofing sheet,hot dip steelcontinuously immersed in the melting zinc plating tank made of galvanized steel plate;Alloyed galvanized steel sheet.This kind of the galvanized steel,iron roofing sheet,hot dip steelis also made by hot dip method, but immediately after the trough, it is heated to about 500℃, so that it produces zinc and iron alloy coating.This galvanized coil has good coating tightness and weldability.
(1) For the galvanized steel,iron roofing sheet,hot dip steel,The classification and code of performance levels shall follow the provisions in Table 1.Table 1 Performance classification and code class Performance class code scope of application General use 01 mechanical bite 02 weight code of zinc layer shall not exceed Z350 stamping 03 thickness range ≥0.4mm weight of zinc layer shall not exceed Z275 deep drawing 04 special killed steel deep drawing 05 non aging super deep drawing 06 structure
(2) For the the galvanized steel,iron roofing sheet,hot dip steel Substrate types and codes are as specified in Table 2.Table 2 Substrate type and code Substrate type Code Cold rolled coil Hot rolled pickling coil H
(3)For the the galvanized steel,iron roofing sheet,hot dip steel The classification and code of double-sided equally-thick galvanized layer and coating weight shall be specified in Table 3.Steel plates and strips of coating weights not listed in table 3 May also be supplied by agreement between the buyer and the seller.