Hot-dip galvanised steel coil (GI) is made by passing a fully hardened steel sheet, which has undergone a pickling and rolling process, through a zinc pot, thereby coating the surface with a zinc film. Due to the properties of zinc, it offers excellent corrosion resistance, paintability and workability. Typically, the process and specifications for hot-dip galvanised steel sheet and galvanised steel coil are essentially the same.

Galvanised steel is mild steel with a coating of zinc The zinc protects the steel by providing cathodic protection to the exposed steel, so should the surface be damaged the zinc will corrode in preference to the steel Galvanised steel is one of the most widely used products, used extensively in the building sector, automotive, agricultural and other areas where the steel needs to be protected from corrosion

Hot-Dip Galvanizing or HDG is a process in which zinc bonds to steel at the molecular level to produce a four-layer corrosion-resistant finish. The first three layers are zinc-iron alloy layers that are actually harder than the base steel. The fourth or top layer is pure zinc.

Galvanised steel coils are thin steel sheets that are dipped into molten zinc in order to attach a layer of zinc to the surface. This is an effective method of corrosion protection that extends the life of the metal material.

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);

Main characteristics of galvanised steel

• Corrosion protection: 13 years for heavy industrial areas, 50 years for marine, 104 years for suburban areas and 30 years for urban areas.

• Inexpensive: Hot dip galvanising costs less than other coatings.

• Reliable: The zinc coating is metallurgically bonded to the steel and forms part of the steel surface, making the coating more durable.

• Toughness: the galvanised steel layer forms a special metallurgical structure that can withstand mechanical damage during transport and use.

• Comprehensive protection: every part of the coating can be galvanised and is fully protected even in depressions, sharp corners and hidden areas.

• Saving time and effort: the galvanising process is faster than other coating methods

Applications of Our Galvanized Steel Coils :

Galvanised steel coil applications:

Galvanised steel coils are used in a wide range of applications and have the advantage of a long corrosion protection period. It is mainly used as a building and substrate for household appliances, office panels, roof panels, automotive panels, and pre-painted steel coils.

Automotive Steel Sheet

　　To use automotive steel plates must first be stamped and formed, where the plates are stamped into parts of the desired shape and size.

　　Spot welding, as an important welding method for joining thin plates, has a wide range of applications in manufacturing, especially in the automotive industry.

Galvanised Roof Sheet

　　The performance requirements for galvanised roof sheets mainly include the mechanical properties of the material (tensile strength, yield strength, elongation), coating properties (coating type, coating thickness and coating adhesion).

Household Office Galvanised Sheet

　　Including air conditioners, washing machines, refrigerators, photocopiers, etc. Household galvanised sheet is mainly used for general forming applications and stamping.

PrePainted Steel Base Metal Substrates

　　Another use for galvanised steel coils is as a substrate for pre-painted steel coils. Pre-painted steel coils are more durable than galvanised coils as they have a polyethylene coating.

1) Standard: JIS G3302 1998, ASTM A653M/A924M 2004, all according to the customer's request
2) Grade: SGCC, SGCH,DX51D, Q195,Q235 all according to the customer's request

3) Capacity: about 12000 tons per month

4) Thickness: from 0.13mm to 2mm, all available
5) Width: from 600mm to 1250mm, regular size:750-762mm,900-914mm,1000mm,1200mm,1219-1250mm all available
6) Coil ID: 508mm
7) Coil weight: from 2-10MT, according to the customer's request

8) Zinc coating weight: 40g/m2-275g/m2

9) Spangle: regular spangle,big spangle, small spangle and zero spangle
10) Surface treatment: Chemical passivating, oils, passivating oils,skin passed
11) Edge: mill edge, cut edge
12) Min trial order 25 ton each thickness

Home appliance outer plate in the plate shape requirements are very demanding, some home appliance outer plate even higher than the requirements of the car plate. Because home appliance outer plate in general is after simple bending moulding after direct use, the use of most of the surface is flat, so home appliance outer plate plate shape bad will directly affect the appearance of home appliance products and plane reflection. Refrigerator side plate, for example, many refrigerator side plate for U-shaped, that is, refrigerator side plate and refrigerator top plate is connected as a whole, the length of the steel plate is more than 3m, and the thickness of the refrigerator side plate is generally 0.40-0.45mm, the steel plate is both long and thin, the shape of the plate is demanding. Home appliance manufacturers require refrigerator panels and refrigerator side panels of the steel plate unevenness for every 2000mm wave height shall not exceed 2mm.

Application:

Hot-dip galvanised sheet is widely used in the field of home appliances, for different uses of hot-dip galvanised home appliance sheet, its surface treatment process is different. Hot-dip galvanised household appliance sheet is mainly divided into appearance parts and functional parts. Among them, the surface of appearance parts is generally painted, mainly including spraying and colour coating; the surface of functional parts is generally only chemically treated, and the most widely used is passivation treatment.

Export Package

Why Us:

DECHO building colour steel plate can meet the need to use colour steel plate as raw material for building. Decho Building Materials colour steel plate is mainly processed into, for example, colour steel corrugated board or colour steel composite sandwich board after our colour steel plate is widely used in the construction of airports, freezers, steel plants, warehouses, and other industrial buildings and commercial buildings, such as the roof of the colour steel tiles, colour steel plate sandwich walls and doors.

Reasons for choosing Decho Building Materials new material:

1. Provide extremely rich colour choices
2. The paint surface is long-lasting and bright
3. Surface coating will not fall off after stamping and has good hardness with strong ductility and is not easy to scratch.
4. with excellent weather resistance, corrosion resistance, is to ensure the durability of the premise of the building
5. DECHO BUILDING MATERIALS for the manufacturer direct sales
6. The colour is customized by customers;
7. Thickness and width have a variety of options;
8. We provide whole rolls and cut boards for sale;

Welcome to enquire.

Shandong Decho Building Materials Technology Co., Ltd (hereafter called “DBM” ) is a professional manufacturer and exporting company of coated steel coils and sheets, with over 13 years of experience in steel industry and 11 years of steel mill work experience, with extensive product knowledge and experience in production process, especially for the supply of coated steel coils with a stable and reliable supply chain of manufacturers and logistics.

DBM is always in pursuit of and committed to providing high quality products and services. Our company has professional quality inspection team members, for each batch of orders can be fully on-site testing and provide test reports, can also accept any third-party testing company on-site testing, we can do is to ensure that each order goods delivered to a high standard, to achieve customer satisfaction, to achieve win-win cooperation.

DBM can meet the need to use colour steel plate as raw material for building. Decho Building Materials colour steel plate is mainly processed into, for example, colour steel corrugated board or colour steel composite sandwich board after our colour steel plate is widely used in the construction of airports, freezers, steel plants, warehouses, and other industrial buildings and commercial buildings, such as the roof of the colour steel tiles, colour steel plate sandwich walls and doors.

DBM only focus on high standard coated coils with warranty service, We are your strict gatekeeper and faithful partner in China import , We always been committed to becoming your long-term reliable supplier in China.