Jiangsu Vespolari Steel Import & Export Co., Ltd.
Jiangsu Vespolari Steel Import & Export Co., Ltd.
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ASTM AISI Q235 A36 Galvanized Iron Sheet Coil Metal Steel Coil
In the plating tank filled with galvanizing liquid, the cleaned and specially pretreated parts to be plated are used as cathodes, and the anodes are made of plated metal, and the two poles are respectively connected with the positive and negative poles of the DC power supply. The galvanizing bath is composed of an aqueous solution containing metal-plating compounds, conductive salts, buffers, pH adjusters and additives. After electrification, the metal ions in the galvanizing solution move to the cathode under the action of the potential difference to form a coating. The metal of the anode forms metal ions into the galvanizing bath to maintain the concentration of the metal ions being plated [1]. In some cases, such as chrome plating, it is an insoluble anode made of lead and lead-antimony alloy, which only plays the role of transferring electrons and conducting current. The concentration of chromium ions in the electrolyte is maintained by regularly adding chromium compounds to the plating solution. When galvanizing, the quality of the anode material, the composition of the galvanizing solution, temperature, current density, energization time, stirring intensity, precipitated impurities, power waveform, etc. will affect the quality of the coating, which needs to be controlled in time.
Technical Standard | EN10147, EN10142, DIN 17162, JIS G3302, ASTM A653 |
Steel Grade | Dx51D, Dx52D, Dx53D, DX54D, S220GD, S250GD, S280GD, S350GD, S350GD, S550GD; SGCC, SGHC, SGCH, SGH340, SGH400, SGH440, SGH490, SGH540, SGCD1, SGCD2, SGCD3, SGC340, SGC340 , SGC490, SGC570; SQ CR22 (230), SQ CR22 (255), SQ CR40 (275), SQ CR50 (340), SQ CR80(550), CQ, FS, DDS, EDDS, SQ CR33 (230), SQ CR37 (255), SQCR40 (275), SQ CR50 (340), SQ CR80 (550); or Customer’s Requirement |
Type | Coil/Sheet/Plate/Strip |
Thickness | 0.12-6.00mm,or customer's requirement |
Width | 600mm-1500mm, according to customer's requirement |
Type of Coating | Hot Dipped Galvanized Steel(HDGI) |
Zinc Coating | 30-275g/m2 |
Surface Treatment | Passivation(C), Oiling(O), Lacquer sealing(L), Phosphating(P), Untreated(U) |
Surface Structure | Normal spangle coating(NS), minimized spangle coating(MS), spangle-free(FS) |
Quality | Approved by SGS,ISO |
ID | 508mm/610mm |
Coil Weight | 3-20 metric ton per coil |
Package | Water proof paper is inner packing,galvanized steel or coated steel sheet is outer packing , side guard plate,then wrapped by seven steel belt.or according to customer's requirement |
Export market | Europe, Africa, Central Asia, Southeast Asia, Middle East, South America, North America, etc |
