Shandong Decho Building Materials Technology Co., Ltd
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minimum spangle hot-dip galvanized steel coils GI Z225 0.75mm 1250mm for cladding roofing
General Information Of Hot Dip Galvanized Steel Coil
Hot-dip galvanized steel coils are available with a pure zinc coating through the hot-dip galvanizing process. It offers the economy, strength and formability of steel combined with the corrosion resistance of zinc. The hot-dip process is the process by which steel gets coated in layers of zinc to protect against rust. It is especially useful for countless outdoor and industrial applications.
| Thickness 0.13-0.7mm (BMT) |
| Width 600-1250mm |
| Zinc Coating 30-200g/m2 |
| Internal Diameter 508mm or 610mm |
| Coil Weight 3-12MT |
| Quality Commercial and structural quality |
| Spangle regular & minimum spangle |
| Surface Treatment Oiled/dry , Skin pass/non-skin pass ,Chromated/non-chromated, |
| Standard JIS G 3302, ASTM A 653M, EN 10327 |
| Steel Grade SGCC, CS, FS, SS, LFQ, DX51D+Z , S280GD |
Chemical Composition Of Hot Dip Galvanized Steel Coil
| C | Si | Mn | P | Si |
| 0.04-0.06% | 0.01-0.03% | 0.18-0.22% | 0.014-0.016% | 0.006%-0.009% |
Technical Data Of Hot Dip Galvanized Steel Coil
| Yield Strength | (Mpa) 280-320 |
| Tensile Strength | (Mpa) 340-390 |
| Elongation | 20%-30% |
| Out-of-square | not exceed 1% Flatness |
| Bow | 15mmmax |
| Edge Wave | 9mmmax |
| Centre Buckle | 8mmmax |
| Bending At 180 Degree | No crack, purling and fraction |
Application Of Hot Dip Galvanized Steel Coil
Production of cold formed corrugated sheets and profiles for roofing, cladding, decking, tiles, sandwich walls, rainwater protective systems, air conditioning duct as well as electrical appliances and engineering
With GI as base metal, after pretreatment (degrease and chemical treatment) and liquid dope with several layers of color, then after firing and cooling, finally the plate steel is called pre-painted galvanized steel. Pre-painted galvanized steel is good capable of decoration, molding, corrosion resistance. It generally displays superior workability, durability and weather resistance.
