Regular spangle galvanized plain coils,GI coil 40GSM characeristic

Regular spangle galvanized plain coils,GI coil 40GSM,zinc coated iron refers to the surface of metal, alloy or other materials plated with a layer of zinc to play a beautiful, rust and other functions of the surface treatment technology.The main methods used are hot dip galvanizing and electric galvanizing.
Generally speaking, Regular spangle galvanized plain coils,GI coil 40GSM,zinc coated iron is to take the substrate (usually cold rolled) in the liquid zinc tank continuous immersion, the formation of a layer of zinc film on the metal surface, play a beautiful role in antirust!, the zinc thickness is to protect the substrate from oxidation!
Hot dip galvanized: galvanized is divided into flower galvanized and no flower galvanized is zero zinc.The forms of surface treatment are as follows:
• Do not do the processing
• Common passivation processing 
• Environmental passivation treatment 
• Oiling treatment
• Common passivation + oiling treatment 
• Environmental passivation + oil treatment
Surface grading:
• FA- General grade - surface defects, such as small zinc particles, are allowed.Imprint. Scratch. Uneven color.Black spot. Stripe. Slight passivation spot, etc.The surface is usually not leveled.Regular spangle galvanized plain coils,GI coil 40GSM,zinc coated iron
• FB -- Higher -- The better side allows minor imperfections, such as finishing indentation, that do not affect formability and coating adhesion.Slight scratch. Slight passivating plaque.Oxidation color, etc. The other side is at least FA. The surface is usually leveled (finished).
• FC- Advanced - Regular spangle galvanized plain coils,GI coil 40GSM,zinc coated iron better side must be further limited to defects.That is, the better side should not have defects that affect the appearance quality of the advanced coated surface, and the other side should be at least FB.The surface is usually leveled (finished).
Electric galvanizing is generally galvanized surface without flower, the advantages of the product are as follows:
• Good coating uniformity, high precision control of zinc layer thickness, fine surface, very suitable
• Requirements for high quality coating;There are various post-processing methods.
• The coating thickness control range covers a wide range from thin to thick 3~90g/m2, full
• The requirements of anti-corrosion properties of various products from home appliances to automobiles;Save zinc resources.
• Good processing and welding performance (spot welding, laser welding)
• Regular spangle galvanized plain coils,GI coil 40GSM,zinc coated iron is very convenient to produce single-sided plating products to meet the requirements of special applications.