Galvanized Steel coils of good qualities

Galvanized Steel coils of good qualities System 1

Galvanized Steel coils of good qualities

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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1.Structure of Hot-Dip Galvanized Steel Sheet Description：

Hot-dip galvanized steel coils are available with a pure zinc coating through the hot-dip galvanizing process. It offers the economy, strength and formability of steel combined with the corrosion resistance of zinc. The hot-dip process is the process by which steel gets coated in layers of zinc to protect against rust. It is especially useful for countless outdoor and industrial applications. Production of cold formed corrugated sheets and profiles for roofing, cladding, decking, tiles, sandwich walls, rainwater protective systems, air conditioning duct as well as electrical appliances and engineering.

2.Main Features of the Hot-Dip Galvanized Steel Sheet：

• Excellent process capability

• Smooth and flat surface

• Workability, durability

• Excellent anticorrosive property

• High strength

• Good formability

• Good visual effect

3.Hot-Dip Galvanized Steel Sheet Images

Galvanized Steel coils of good qualities

4.Hot-Dip Galvanized Steel Sheet Specification

Standard: ASTM, JIS,EN

Grade: CS, DX51D+Z,SGCC, SS 230~550,S220GD+Z~S550GD+Z, SGC340~SGC570

Thickness: 0.1mm~5mm

Width: max 2000mm

Coil weight:3-12 MT

Coil ID:508/610mm

Surface structure: zero spangle, regular spangle or minimum spangle

Surface treatment: Chromate treatment, Oiled/dry, skinpassed/non-skinpassed

Packing: Standard seaworthy export package

Technology test results:

Packaging & Delivery

Packaging Details:	export steel waterpoof packing.
Delivery Detail:	within 15 days after receiving your deposit.

Specifications

SGCC,SGCH,DX51D,DC51D
Thickness : 0.15mm - 4.00mm
Width : 11mm-1500mm,762/914/1000/1250
Zinc coating : Z80 - Z275/m2

5.FAQ of Hot-Dip Galvanized Steel Sheet

We have organized several common questions for our clients，may help you sincerely：

1.How about your company？

A world class manufacturer & supplier of castings forging in carbon steel and alloy steel，is one of the large-scale professional investment casting production bases in China,consisting of both casting foundry forging and machining factory. Annually more than 8000 tons Precision casting and forging parts are exported to markets in Europe,America and Japan. OEM casting and forging service available according to customer’s requirements.

2.How to guarantee the quality of the products？

We have established the international advanced quality management system，every link from raw material to final product we have strict quality test；We resolutely put an end to unqualified products flowing into the market. At the same time, we will provide necessary follow-up service assurance.

Q:Correct me if I am wrong, but steel is an alloy between iron and carbon. Does the carbon in the steel stops the iron from rusting or corroding? Also what is the difference between mild steel and stainless steel?: Mild steel is an alloy. It is the most common form of steel. Mild steel (a so-called carbon steel) is a general term for a range of low carbon (a maximum of about 0.3%) steels that have good strength and can be bent, worked or can be welded into an endless variety of shapes for uses from vehicles (like cars and ships) to building materials. The carbon does not stop the material rusting or corroding. In addition to iron, carbon, and chromium, modern stainless steel may also contain other elements, such as nickel, niobium, molybdenum, and titanium. Nickel, molybdenum, niobium, and chromium enhance the corrosion resistance of stainless steel. It is the addition of a minimum of 12% chromium to the steel that makes it resist rust, or stain 'less' than other types of steel. The chromium in the steel combines with oxygen in the atmosphere to form a thin, invisible layer of chrome-containing oxide, called the passive film. The sizes of chromium atoms and their oxides are similar, so they pack neatly together on the surface of the metal, forming a stable layer only a few atoms thick. If the metal is cut or scratched and the passive film is disrupted, more oxide will quickly form and recover the exposed surface, protecting it from oxidative corrosion.

Q:I don't know why but I'm having a VERY difficult time finding the melting point of 1008 steel.: It is still the same for 1008 steel. Go to the bottom and see the listing of the grades it covers. Since the only difference between the 1006 and 1008 steel is a few micro amounts of alloys and by far the greatest majority or main component is iron (99%), as a general melt temperature , 2750 F is the melt temperature at which the other alloys are added to the charge to fine tune the mix. Just like adding salt to distilled water actually lowers the boiling point of water, adding alloys to iron decreases the melting point of iron. The iron melts at 2800F, but once alloys to make the 1008 grade are added, it decreases melt temp to 2750F. Since the melting point of pure iron is 2800F, the temperature is actually decreased by adding these impurities of alloys. These alloys are tested while the mix is starting to come down from a pure melt, steel is sampled. and then alloys below are checked and added to make the 1008 steel. The steel is maintained at 2750 F so that the less volatile alloys don't boil off before combining with steel. Minimum Properties Ultimate Tensile Strength, psi 43,900 - 51,900 Yield Strength, psi 26,100 - 34,800 Elongation 42 - 48% Chemistry Iron (Fe) 99% Carbon (C) 0.08% Manganese (Mn) 0.6% max Phosphorus (P) 0.035% max Copper (Cu) 0.2% min Sulfur (S) 0.04%

Q:How are steel coils processed?: Steel coils are processed through a series of steps that include uncoiling, levelling, cutting, and recoiling, ensuring the steel is transformed into the desired shape and size for various applications such as construction, automotive, and manufacturing industries.

Q:Does SA use its own iron ore to produce steel for construction or do we rely on imports?: There is a ludicrous mixture of the two at present. We export a large percentage of our steel to China predominantly but also to other regions then import what ever the shortfall is on the local market, often at inflated prices. The company I work for obtains all its steel from only one supplier, who we have shares in, and under the counter cash incentives are the order of the day, I keep myself above water by refusing the cash and sign no documents relating to those dealings, I'm not prepared to go to prison for a cash bonus.

Q:What are the different types of welding methods used for steel coils?: There are several types of welding methods used for steel coils, including: 1. Shielded Metal Arc Welding (SMAW): Also known as stick welding, it uses a flux-coated electrode to create an arc between the electrode and the base metal, forming a weld. 2. Gas Metal Arc Welding (GMAW): Also called MIG welding, it uses a continuous wire electrode and a shielding gas, typically argon or a mixture, to create a weld. 3. Flux-Cored Arc Welding (FCAW): Similar to GMAW, but instead of a solid wire electrode, it uses a tubular electrode filled with flux, which provides additional shielding and can be used with or without a shielding gas. 4. Submerged Arc Welding (SAW): It involves a continuous wire electrode and a granular flux that is fed under a layer of flux, creating a submerged arc and a highly efficient weld. 5. Resistance Welding: It utilizes electricity to generate heat and pressure, joining the steel coils together. Types of resistance welding include spot welding, seam welding, and projection welding. Each welding method has its own advantages and limitations, and the choice depends on factors such as the specific requirements of the steel coils, the thickness of the material, and the production process.

Q:Is boron steel or carbon steel a harder metal? Which one is more flexible?: Boron Steel

Q:Can steel coils be transported by air?: Yes, steel coils can be transported by air. However, it is important to note that the size and weight of the coils may limit the type of aircraft that can be used for transportation. Additionally, special equipment and packaging may be required to ensure the safe and secure transport of the coils.

Q:What are the different types of steel coatings for coil protection?: There are several types of steel coatings for coil protection, including galvanized coatings, zinc coatings, aluminum coatings, and polymer coatings.

Q:Having a greater amount than 2% carbon in steel causes steel to suddenly become brittle. Why is this?: Carbon fiber has better tensile capability then steel meaning its better while pulled aside. Plus you could mould the fiber to make autos-or homes-out of carbon fiber.

Q:What are the dimensions of steel coils used in the industrial machinery industry?: The dimensions of steel coils used in the industrial machinery industry can vary depending on the specific application and requirements. However, common dimensions for steel coils used in this industry range from 0.15 to 3.5 mm in thickness and 600 to 2,000 mm in width. The inner diameter of the coil typically ranges from 508 to 762 mm. It is important to note that these dimensions can vary based on the specific needs of the machinery and the manufacturer.

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