Galvanised Products

1. Definition GP Sheet (Galvanized Plain Sheet) is a cold rolled steel sheet coated with a layer of zinc through the hot-dip galvanizing process. This zinc coating provides excellent corrosion resistance, increases durability, and gives the sheet a bright, reflective appearance. 2. Manufacturing Process Base Material: Cold Rolled (CR) Sheet Process: Continuous hot-dip galvanizing Surface Treatment: Passivation or oil coating to prevent white rust Finish Types: Regular spangle, minimized spangle, or zero spangle

Galvalume sheet specifications include a coating of 55% aluminum, 1.6% silicon, and the rest zinc, which is applied to steel. Key specifications to consider are coating weight (measured in gsm, like AZ150), thickness (e.g., 24 or 26 gauge), and grade (e.g., ASTM A 792 or JIS G 3321). Other specifications can include width, length, profile type (like trapezoidal), and pre-painted options.

. Definition Galvalume Coils are cold rolled steel coils coated with a 55% Aluminum, 43.4% Zinc, and 1.6% Silicon alloy using a continuous hot-dip process. This alloy coating combines the corrosion resistance of aluminum with the barrier protection of zinc, providing superior durability and heat reflectivity compared to traditional galvanized (zinc-coated) steel. 2. Manufacturing Process Base Material: Cold Rolled (CR) Steel Process: Continuous Hot-Dip Coating in Al-Zn-Si alloy bath Surface Treatment: Chromate or non-chromate passivation / oil coating to prevent white rust Form: Supplied in coil or sheet form, with optional slit edges..