Decoiling Dx51d/Dx52D/Dx53D Cold Rolled Galvanized Steel Gi Coil with Regular Spangle
Hot-dip galvanizing is the reaction of molten metal with an iron substrate to produce an alloy layer, thereby combining the substrate and the plating layer. Hot-dip galvanizing is to pickle iron and steel parts first. In order to remove iron oxide on the surface of iron and steel parts, after pickling, it is cleaned in an ammonium chloride or zinc chloride aqueous solution or a mixed solution of ammonium chloride and zinc chloride.And then sent to the hot-dip plating bath. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.
| Technical Standard | EN10147/EN10142/DIN 17162/JIS G3302/ASTM A653 |
| Steel Grade | Dx51D, Dx52D, Dx53D, DX54D, S220GD, S250GD, S280GD, S350GD, S350GD, S550GD; SGCC, SGHC, SGCH, SGH340, SGH400, SGH440, SGH490, SGH540, SGCD1, SGCD2, SGCD3, SGC340, SGC340 , SGC490, SGC570; SQ CR22 (230), SQ CR22 (255), SQ CR40 (275), SQ CR50 (340), SQ CR80(550), CQ, FS, DDS, EDDS, SQ CR33 (230), SQ CR37 (255), SQCR40 (275), SQ CR50 (340), SQ CR80 (550); or Customer’s Requirement |
| Type | Coil/Sheet/Plate/Strip |
| Thicness | 0.12~6.0mm or customer's requirement |
| Width | 600~1500mm according to customer's requirement |
| Type of Coating | Hot Dipped Galvanized Steel(HDGI) |
| Zinc Coating | 30-275g/m2 |
| 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) |
| Quality | Approved by SGS,ISO |
| ID | 508mm/610mm |
| Coil Weight | 3-20 metric ton per coil |
| Package | Water proof paper is inner packing,galvanized steel or coated steel sheet is outer packing , side guard plate,then wrapped by seven steel belt.or according to customer's requirement |
| Export market | Europe, Africa, Central Asia, Southeast Asia, Middle East, South America, North America, etc |
Galvanized steel sheet products are mainly used in construction, light industry, automobile, agriculture, animal husbandry, fishery and other industries. Such as building roofs, highway guardrails, sheet metal processing, roof grilles, household appliance enclosures, ventilation ducts, chimneys, kitchen utensils, grain storage and transportation, frozen processing of meat and aquatic products, etc.
| Technical Standard | EN10147/EN10142/DIN 17162/JIS G3302/ASTM A653 |
| Steel Grade | DC51D+AZ, DC52D+AZ, DC54D+AZ, DC53D+AZ, S250GD+AZ, S300GD+AZ, S350GD+AZ, S450GD+AZ, S550GD+AZ or Customer’s Requirement |
| Type | Coil/Sheet/Plate/Strip |
| Thicness | 0.12~6.0mm or customer's requirement |
| Width | 600~1500mm according to customer's requirement |
| Type of Coating | Hot Dipped Galvanized Steel(HDGI) |
| Al-Zn Coating | 20-275g/m2 |
| Surface Treatment | DRY,OIL,Chromate,Anti-finger print,Gr-free,etc |
| ID | 508mm/610mm |
| Coil Weight | 3-20 metric ton per coil |
| Package | Water proof paper is inner packing,galvanized steel or coated steel sheet is outer packing , side guard plate,then wrapped by seven steel belt.or according to customer's requirement |
| Export market | Europe, Africa, Central Asia, Southeast Asia, Middle East, South America, North America, etc |
Galvalume steel is also called Aluminum-Zinc Alloy Coated Steel,aluminized zinc steel(aluzinc steel),SGLC,The galvalume metal is composed of 55% aluminium, 43.4% zinc and 1.6% silicon solidified at 600 ~C. Its whole structure consists of aluminium-iron-silicon-zinc, forming a compact quaternary crystal alloy.The surface of the galvalume steel sheet is characterized by smooth, flat and gorgeous stars, and its base color is silver white. The special coating structure makes it have excellent corrosion resistance.
The normal service life of galvalume steel sheet is up to 25a, and its heat resistance is good. It can be used in high temperature environment at 315 C. The adhesion between coating and paint film is good, and it has good processing performance. It can be punched, sheared and welded. The surface conductivity is very good.

Since our establishment we have always adhered to the business policy of "sincerity, mutual benefit, high efficiency,high quality”tent, to provide stable resources for domestic and foreign large-scale engineering projects for a long time. Complete specifications, adequate supply, standing inventory of more than 15000 tons. Company adhering to:"Customer first. A win-win situation"business philosophy. adhere to the "Customer first" principle to provide quality services for our customers. Look forward to working with you and serving you.
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