Hot Dipped Galvanized Steel Coil GL or GI Coil

Hot Dipped Galvanized Steel Coil GL or GI Coil System 1

Hot Dipped Galvanized Steel Coil GL or GI Coil

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Loading Port:: Shekou

Payment Terms:: TT or LC

Min Order Qty:: 23 m.t.

Supply Capability:: 231 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

Hot Dipped Galvanized Steel Coil GL or GI Coil

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:

Item	Description
Standard	JIS, DIN, ASTM, EN
Steel Grade	SGCC, SGCH, DX51D or others
Zinc Coating	50g/m²-275g/m²
Coil Weight	3-10MT
Coil ID	508mm/618mm
Width	500-1500mm
Surface Treatment	Chromated, oiled, phosphating, lacquer seal, SECCAFP or others
Spangle	Zero spangle, minimum spangle, normal/regular spangle or large spangle
Color	According to RAL system or your requirement
Packaging	Standard Seaworthy Packaging for International Transportation
Delivery Time	10-25 days (Depends on the quantity you required)
Payment Term	T/T or L/C

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.

3. How long can we receive the product after purchase?

Usually within thirty working days after receiving buyer’s advance payment or LC. We will arrange the factory manufacturing as soon as possible. The cargo readiness usually takes 15-30 days, but the shipment will depend on the vessel situation.

Q:How are steel coils processed and treated?: To ensure the quality and suitability of steel coils for different applications, they undergo a series of steps and treatments. Initially, the coil is uncoiled by removing its protective wrapping and unwinding it. Any defects like cracks or uneven surfaces are then inspected. Next, the coil is cleaned to eliminate dirt, oil, and rust using chemical agents and mechanical scrubbing. After cleaning, it is rinsed and dried to prevent corrosion caused by residual moisture. Once cleaned, the steel coil may be treated based on its intended use. One common treatment is pickling, where the coil is immersed in an acidic solution to remove impurities and scale. This improves the surface finish and prepares the steel for further processing. After pickling, the coil can undergo cold rolling, which reduces its thickness and improves dimensional accuracy. This is done by passing the steel through a series of rollers at room temperature, gradually decreasing thickness and increasing strength. It also improves the surface finish. In some cases, the coil may undergo additional heat treatments like annealing or tempering. Annealing involves heating the coil to a specific temperature and slowly cooling it to relieve internal stresses and improve mechanical properties. Tempering, on the other hand, involves reheating the coil to a lower temperature and rapidly cooling it to enhance strength and toughness. Once the desired processing and treatments are completed, the steel coil may be coated or painted for added protection against corrosion or to enhance its appearance. Coating processes can include hot-dip galvanizing, electroplating, or applying organic coatings like paint or powder coatings. Finally, the processed and treated steel coils are cut into specific sizes or shapes according to customer requirements. This can be done using cutting methods such as shearing, slitting, or sawing. Overall, the processing and treatment of steel coils involve cleaning, pickling, rolling, heat treatment, coating, and cutting processes. These steps are carefully carried out to ensure the quality, strength, and suitability of the steel for its intended applications.

Q:How are steel coils used in the manufacturing of pressure vessels?: Steel coils are used in the manufacturing of pressure vessels as they are processed into flat sheets and then formed into the desired shape. These coils provide strength and durability to the pressure vessel, ensuring it can withstand high pressures and temperatures.

Q:What are the challenges in welding steel coils?: Some challenges in welding steel coils include potential distortion due to heat, ensuring consistent and strong welds along the entire length, managing the high temperatures involved, and avoiding defects such as porosity or cracking. Additionally, the large size and weight of the coils can pose logistical challenges for handling and positioning during the welding process.

Q:hello guys. im totally new to this metalwork things. i need to do it for my project. i need to join stainless steel wires to build some kind of structure (eiffel tow. for example).i already have the wire and the torch. now the question is: where do i get silver solder? is it expensive? and what is flux for? is it necessary? what does it do? is it expensive?thank u for ur time guys! :): Silver Solder is more expensive than lead/tin solder as it contains silver. It also melts at a much higher temperature. You require special Flux designed for stainless steel and silver solder. Cost of Silver Solder and Flux will depend on the quality, quantity, and where you are located. Prices vary from area to area especially country to country. Instructions: 1: Clean all surfaces to be soldered with solvent and a wire brush to remove all grease, corrosion or dirt. 2: Apply a coating of flux to the stainless steel parts you are connecting. If you are soldering brass or copper parts to the stainless steel, tin them first by heating them and applying a thin coat of solder to the area that connects to the stainless steel. 3: Hold your parts together with wire or clamps. Make sure the surfaces fit flush. Silver solder will not fill gaps. 4: Heat the parts with a torch until the solder flows onto the joint. When the parts are hot enough, the solder will instantly turn to liquid when it touches the metals, then it will flow into the joint. If it does not do this, keep heating the metal until it does, but do not heat the solder directly. Only allow the hot metal to melt the solder. 5: Remove the torch and solder as soon as a sufficient amount of solder melts onto the joint. You don't need much, and a glob can look ugly. 6: Allow the metal to cool before touching or cleaning it. You can dunk it in water to cool it faster.

Q:They both sell the same thingIf prices are to high companies won't by the steelIf prices are to low then the steel company won't earn enoughWhy are some steel companies more successful than others: Steel is a global commodity. There is some variety in product (flat rolled, tubing, etc), but basically the same product worldwide. Cost to the customer includes shipping of a very heavy product. Inputs are also heavy and costly to ship. Inputs: - Coal - Iron Ore. Some firms have the ability to recycle old steel, a competitive advantage. - Energy (very energy intensive industry) - Labor - Machinery. A new blast furnace is more efficient than 50 years old. So the most profitable steel firms have some of these characteristics: - Proximity to raw materials - Proximity to customers - Access to cheaper means of transportation; rail and sea - Newer machinery - Cheaper labor force - Reasonable cost for electricity and fuel for furnaces

Q:How are steel coils used in the manufacturing of electrical equipment?: Steel coils are used in the manufacturing of electrical equipment as they serve as the core material for transformers and inductors. These coils are wound with copper wire to create electromagnetic fields necessary for the functioning of various electrical devices.

Q:What are the different methods of recoiling steel coils?: There are several methods of recoiling steel coils, including the slitting method, the oscillating method, and the rewinding method.

Q:I have been wanting a new pair of hiking boots, but haven't had the money. I just got a job that requires me to have steel toed boots. The job is only for a few weeks, but I may be required to wear them on other jobs in the future. Regardless of which style I get, I will most likely be buying Red Wing boots. On their website, I see they have steel toed hiking boots. What is the purpose of a steel toed hiking boot? Why would a hiker need to have steel toed boots? Wouldn't that just be more weight? I see that some of their hiking boots have aluminum toes, claiming to be 33% lighter than steel with the same protection. Would these boots be good potential hiking boots as well as suitable for construction or should I just focus on work boots and buy myself some hiking boots at a later date?: Steel Toe Hiking Boots

Q:What are the different types of steel coil slitting lines?: There are several different types of steel coil slitting lines that are used in the metal processing industry. These lines are designed to cut large coils of steel into narrower strips, which can then be used for various applications. 1. Loop Slitting Lines: Loop slitting lines are the most common type of slitting line used in the industry. They consist of a decoiler, which holds the coil, a slitter head that cuts the coil into strips, and a recoiler, which winds the strips back into smaller coils. Loop slitting lines are versatile and can handle a wide range of coil widths and thicknesses. 2. Scrap Chopper Slitting Lines: Scrap chopper slitting lines are similar to loop slitting lines but include a scrap chopper unit. This unit cuts any excess material from the edges of the coil before it is slit into strips. This helps to improve the efficiency of the slitting process and reduces waste. 3. Double Loop Slitting Lines: Double loop slitting lines are used for high-speed slitting of thin-gauge coils. They feature two looping pits, which allow for continuous operation. While one coil is being processed, the other is being prepared for slitting, ensuring minimal downtime. 4. Turret Head Slitting Lines: Turret head slitting lines are designed for high-volume production and can process multiple coils simultaneously. They feature a turret head with multiple slitter knives, which can be quickly rotated to switch between different coil widths. This allows for faster and more efficient production. 5. Rotary Shear Slitting Lines: Rotary shear slitting lines are used for thicker and harder materials. They use a rotary shear instead of a slitter head to cut the coil into strips. The rotary shear offers better cutting performance and can handle higher tensile strength materials. 6. Combination Slitting Lines: Combination slitting lines are versatile machines that can handle a range of materials and can perform both slitting and cut-to-length operations. These lines are ideal for smaller manufacturers or those who require flexibility in their production process. Overall, the type of steel coil slitting line used will depend on the specific requirements of the manufacturer, including the type of material being processed, the desired strip width, and the volume of production.

Q:How are steel coils tested for quality?: Steel coils are tested for quality through a series of rigorous inspections and tests. These include visual inspections to identify any surface defects, dimensional measurements to ensure proper size and shape, and mechanical tests such as tensile strength and hardness tests. Additionally, non-destructive testing methods like ultrasonic testing and magnetic particle inspection are used to detect internal defects or cracks. These comprehensive quality checks ensure that steel coils meet the required standards and are fit for their intended applications.

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