Hot Dipped Cold Rolled Galvanized Steel Coil Z125 With Gauge 22 24 28 30
Hot-dip galvanized sheet and electro-galvanized sheet are fundamentally different in the structure of the coating. There is a slightly brittle compound layer between the pure zinc coating of the hot-dip galvanized sheet and the steel strip substrate. When the pure zinc coating is crystallized, most of the zinc flowers are formed, and the coating is uniform and free of pores. The zinc atoms of the electro-galvanized layer are only deposited and precipitated on the surface of the steel strip, and are attached to the surface of the steel strip by physical action. Therefore, hot-dip galvanized sheet is more corrosion-resistant than electro-galvanized sheet.
Hot Dipped Galvanized Steel Coil | ||||
Width | 30-1500mm | |||
Thickness | 0.12-4.0mm | |||
Tolerance | Thickness& Width:+/-0.02mm | |||
Zinc coating | 30-275g/m2 | |||
Package weight | 2 -6 ton per coil | |||
Surface | Passivation,Fat liquoring,Stop-off lacquer | |||
Hardness | HRB50-71(CQ Grade),HRB45-55(DQ Grade) | |||
Tensile Strength | 270-500(CQ Grade),270-420(DQ Grade) | |||
Yield Strength | 140-300 (DQ Grade) | |||
Elongation Percentage | 22 (CQ Grade thickness less 0.7mm),24 (DQ Grade thickness less 0.7mm) | |||
Spangle coating | Big Spangle, small Spangle,Spangle-free | |||
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) | |||
Standard | EN 10142,EN 10147,EN 10292,JIS G3302, ASTM A653/A653M, BQB 420 | |||
Grade | Q195,Q235,Q235B,Q345,Q345B,SGCH,JIS G3302, ASTM A653,S280GD+Z, S350GD+Z, SGCC, DX51D/ DX52D, SGCC,DX51D+Z/ DX52D+Z | |||
Packaging | Building , Corrugated sheet Roofing, electrical, Appliances, Automobile industry, Transport Packaging ,Machinery processing ,Interior decoration , Medical | |||
Application | Inside:Anti-rust paper,Plastic. Outside:Steel inner and outside guard board,Circle Iron guard board for both side,Outside iron guard board, 3 Radial Strapping and 3 Latitude Strapping. We can also pack according to your requirement. |