ASTM AISI Galvanized Iron Steel Metal Coil Q235 A36 Low Price Steel Coil For Roofing
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.
Product Description :
| Name | Galvanized Steel Coil / Strip |
| Technical Standard: | JIS 3302 / ASTM A653 / EN10143 / EN 10142 / EN 10147 /EN 10292, |
| Grade | DX51D / DX52D/ DX53D/ S250, S280, 320GD,SGCC |
| Types: | Commercial / Drawing / Deep Drawing / Structural quality |
| Width | 650/726/820/914/1000/1200/1219/1220/1250mm/1500mm |
| Thickness | 0.12-1.0mm (0.12-0.5mm is the most advantage thickness)1.0-4.0mm |
| Package Weight | 3-8tons per coil or as required |
| Type of coating: | Galvanized |
| Zinc coating | Z60-275g/m² |
| Hardness | HRB50-71(CQ Grade),HRB45-55(DQ Grade) |
| Tensile Strength | 270-500(CQ Grade),270-420(DQ Grade) |
| Surface treatment | Passivation(C),Oiling(O),Lacquer sealing(L),Phosphating(P),Untreated(U) |
| Surface structure: | zero spangle / minimized spangle / regular spangle/ big regular spangle |
| Application: | Construction industry: to manufacture structural elements low-rise construction, light steel thin-walled structures, sandwich panels, lining of heat pipelines and various heat insulation, conditioning systems, metal roof shingle, profiled sheeting, culvert pipes, cladding of entry doors, elevators, reinforcement profiles for PVC windows and plastic doors, European-type fasteners for plasterboards, etc Automotive industry: to manufacture external and internal car body parts, as well as to repair external public transport body parts, eg for buses and trams) Machine building and instrumentation industries: to manufacture cases for electrical and mechanical equipment, home appliances, metering devices and packingManufacture houseware (tableware, bowls, buckets, tanks, baths, etc) Manufacture colour-coated (and other type of coating) rolled steel |
Packing & Delivery:
FAQ:
Q1. What are your company's main products ?
A1: Our main products are Carbon Steel, Stainless Steel, Galvanized Steel Sheet, Coil, Tube, Bar, Profile etc.
Q2. How do you control quality ?
A2: Mill Test Certification is supplied with shipment, Third Party Inspection is available. and we also get ISO,SGS,Alibaba Verified.
Q3. What are the advantages of your company ?
A3: We specialise in steel business for years,so we have mature production technology,stable capacit,more competitive price,
we dedicated to strict quality control and thoughtful customer service
Q4. Can you provide sample ?
A4: We can provide the samll samples in stock for free, as long as you contact us.
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ASTM AISI Q235 A36 Galvanized Iron Sheet Coil Metal Steel Coil Images
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