Hot-dip Galvanized Steel (GI)
At present, prime hot dipped galvanized steel coils (gi steel sheet coil) is more and more popular. In order to prevent corrosion and prolong its service life, steel plate is coated with a layer of metal zinc, which is called a galvanized plate. Hot dip galvanization of hot dipped galvanized sheet metal(hdg steel)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. Due to the different treatment methods in the coating process, the surface state of the galvanized hot dipped steel sheet is also different, such as ordinary zinc flower, fine zinc flower, flat zinc flower, no zinc flower, etc. The pre coated gi sheet price is generally higher than the price of gi sheet.
Types Of Hot-dip Galvanized Steel (GI)
Big Spangle Galvanized Steel
Big Spangle Galvanized Steel
Normal zinc Spangle (commonly known as ordinary zinc spangle, large zinc spangle) hot dip galvanised steel coil is the basic variety of hotdip galvanized steel strip (plate).
View More
Small Spangle Galvanized Steel
Small Spangle Galvanized Steel
It is required to control the solidification process of the zinc layer to obtain relatively uniform and fine zinc flowers, but visible to the naked eye. All types of the hdg hot dip galvanized steel coils are making procedure and function are the same, only appearance difference.
View More
Zero Spangle Galvanized Steel
Zero Spangle Galvanized Steel
Small zinc flowers invisible to the naked eye were obtained by means of control.Different customer preferences, different markets, and different uses determine different zinc flowers.
View More
Specifications of Hot-dip Galvanized Steel (GI)
|
Product |
Hot-dip Galvanized Steel (GI) |
|
Thickness |
|
|
Width |
600-1500mm |
|
Coil weight |
3-8ton |
|
Material grade |
SGCC,DC51D,DX51D,Q195,Q235,S350GD,S450GD,S550GD |
|
Spangle |
Normal spangle, large spangle, small spangle, zero spangle |
|
Test |
Corresponding instruments |
|
Zinc coated |
30-275g/m2 |
|
Package |
Covered with waterproof paper, strapped by strips or as customers' requirement |
Application Of Hot-dip Galvanized Steel
Hdg hot dip galvanized steel products are mainly used in construction, light industry, automobile, agriculture, animal husbandry, fishery, commerce, and other industries.
In construction industry, galvanized steel sheet in coil of hdg is mainly used for manufacturing anti-corrosion industrial and civil building roof panels, roof grilles, etc.;
In light industry, it is mainly used for manufacturing household appliance shells, civil chimneys, kitchen utensils, etc.;
In automobile industry, it is mainly used for manufacturing corrosion-resistant parts of cars, etc.;
In agriculture, animal husbandry, and fishery, it is mainly used for grain storage and transportation, frozen processing utensils of meat and aquatic products, etc.;
In commerce, it is mainly used for material storage Transportation, packaging, etc.
Difference Between Hot Dip Galvanized Steel and Galvanized Steel
Hot-dip galvanizing, also known as hot-dip galvanizing and hot-dip galvanizing, is an effective metal anti-corrosion method, which is mainly used in metal structure facilities of various industries. It is to immerse the steel parts after rust removal into the molten zinc at about 500 ℃ to make the surface of steel members adhere zinc layer, so as to achieve the purpose of anti-corrosion.
Electro galvanizing, also known as cold galvanizing in the industry, is the process of forming a uniform, dense and well-bonded metal or alloy deposition layer on the surface of parts by electrolysis. Compared with other metals, zinc is relatively cheap and easy to be plated. It is a low-value anti-corrosion electrodeposition. It is widely used to protect iron and steel parts, especially to prevent atmospheric corrosion, and for decoration.
Generally, the galvanized steel coil prices is different between hot dip galvanized steel and electro galvanizing, the price of hot-dip galvanizing is higher.
Hot-dip galvanizing process: finished product Pickling - water washing - adding auxiliary plating solution - drying - hanging plating - cooling - medicated chemical - Cleaning - grinding - hot-dip galvanizing.
Process flow of electro galvanizing: chemical degreasing - hot water washing - water washing - electrolytic degreasing - hot water washing - water washing - strong corrosion - water washing - electro galvanizing ferroalloy - water washing - water washing - Lighting - passivation - water washing - drying.
Dipping for a certain period of time can be put forward, which is hot-dip galvanizing. Owing to different techniques applied in proccess, hot hot dip galvanized steel can be produced with unequal spangle. Among which the regular spangle galvanized steel is the most common one.
There are many processes for hot-dip galvanizing, which can only be immersed in the molten zinc bath after oil removal, pickling, dipping, drying, and other processes. Dipping for a certain period of time can be put forward, which is hot-dip galvanizing. For example, some hot-dip galvanized pipe fittings are processed in this way.
Electro galvanizing is processed by electrolytic equipment. After degreasing, pickling, and other processes, it is immersed in the solution containing zinc salt, connected with the electrolytic equipment, and precipitated zinc layer on the workpiece during the directional movement of positive and negative current.
The overall appearance of hot-dip galvanizing is a little rough, which will produce process water lines, droppings and another performance, especially one end of the workpiece is obvious, and the whole is silver-white. And the surface of galvanizing is smooth, mainly yellow-green, of course, there are colorful, cyan white, white, green light and other performance, the whole workpiece basically will not appear zinc tumor, caking and other phenomena.
East Steel is a professional steel coil manufacturers, we provide color coated steel coil, hot galvanized steel coil, galvanized hot dipped steel, gi steel coil, hot dipped galvanized sheet metal, gi sheet coil, prepainted galvanized steeland etc. Want to knowgi colour sheet priceor more? Please contact us.
Send product request
Other supplier products
 |
Pre-painted Galvalume Steel (PPGL) | The coating of pre painted galvalume steelis composed of 55% aluminium, 43.4% zinc and 1.6% trace elements. PPGL is a product made of galvalume ... |
 |
Coated Steel Sheet & Coil | Colour coated steel coil is a kind of metal product on which protective and decorative paint is coated. Easteel offers you the preferential color c... |
 |
Camouflage Pattern PPGI | Jiangsu East steel has been committed to environmental protection, reducing energy consumption and pollutant emissions in the production process, a... |
 |
Galvalume/Aluzinc Roofing Sheet (GL) | Galvalume steel sheet is an important alloy material often used in daily life. Galvalume steel plate is composed of Al Zn alloy structure, which co... |
 |
Wood PPGL | Wood Grain PPGL is one of the types of Pre-painted Galvalume Steel (PPGL) and can be customized to be made. Advantages of Wood Grain PPGL Advantag... |
Same products
 |
Square type single Nut | Seller: SCREW TECHNOLOGY CO., LIMITED | Square type single Nut The Square Nut is finished with a large mounting face paraller to the N... |
 |
ASTM B111/ ASME SB111 COPPER ALLOY STEEL TUBE | Seller: YUHONG GROUP CO., LIMITED ZHEJIANG YUHONGWELL STEEL CO., LIMITED | ASME SB111 C70600 Tube Copper-nickel alloy that resists seawater corrosion and has high antifouli... |
 |
ASTM A789/ASME SA789 DUPLEX STEEL PIPE/TUBE | Seller: YUHONG GROUP CO., LIMITED ZHEJIANG YUHONGWELL STEEL CO., LIMITED | ASTM A789/A789M, 2022 Edition, March 1, 2022 - Standard Specification for Seamless and Welded Fer... |
 |
ASTM B622/ASME SB622 NICKEL ALLOY PIPE/ TUBE | Seller: YUHONG GROUP CO., LIMITED ZHEJIANG YUHONGWELL STEEL CO., LIMITED | ASTM B622/ASME SB622is the specification that covers seamless pipe and tube of nickel and nickel-... |
 |
ASTM A312/ASME SA312 STAINLESS STEEL PIPE | Seller: YUHONG GROUP CO., LIMITED ZHEJIANG YUHONGWELL STEEL CO., LIMITED | ASTM sa 312/ASME SA312 stainless steel pipe for sale covers seamless straight seams welding and h... |
