Active Member
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[China]
Address: 88 Century Dadao, Pudong New Area, Shanghai, China
Contact name:Zhang
DZ Iron Steel Group |
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Galvanized Sheet Metal For Corrugated Metal Roofing Coil Stock Suppliers Prices
What Is Galvanized Steel?
The galvanized coil is a thin steel plate in which a thin steel plate is immersed in a molten zinc bath to adhere a layer of zinc to the surface.Galvanized steel is a surface treatment technique that coats a layer of zinc on the surface of a metal, alloy or other material for aesthetics, rust prevention, and the like. The main method used is hot-dip galvanizing. Zinc is easily soluble in acid and soluble in alkali, so it is called an amphoteric metal. Zinc hardly changes in dry air. In moist air, a dense zinc carbonate film is formed on the zinc surface. In the atmosphere containing sulfur dioxide, hydrogen sulfide and marine, the corrosion resistance of zinc is poor, especially in the atmosphere containing high temperature and high humidity containing organic acid, the zinc coating is easily corroded.
The standard electrode potential of zinc is -0.76V. For steel substrates, zinc coating is an anodic coating. It is mainly used to prevent corrosion of steel. Its protective performance has a great relationship with the thickness of the coating. After passivation, dyeing or coating of the photoresist, the zinc coating can significantly improve its protection and decorative properties. |
Product Composition
| Galvanized Category |
| 1. Cold galvanizing:is also called electro-galvanizing: it is to remove the oil,
pickle, and then put into the solution of zinc salt by electrolysis
equipment, and connect the negative electrode of the electrolysis
equipment, place the zinc plate on the opposite side of the pipe
fitting, and connect When the positive electrode of the
electrolysis device is turned on, a layer of zinc is deposited on
the pipe by the directional movement of the current from the
positive electrode to the negative electrode, and the cold-plated
pipe member is processed and then galvanized. 2. Mechanical galvanizing: In a rotating drum equipped with plated parts, glass balls, zinc powder, water and accelerator, the glass ball as the impact medium rotates with the drum, causing friction and hammering on the surface of the plated part. The mechanical physical energy, under the action of a chemical accelerator, "cold-welds" the plated zinc powder onto the surface of the plated part to form a smooth, uniform and fine coating having a certain thickness. 3. Hot-dip galvanizing: The main method used for galvanizing the surface of steel sheets is hot-dip galvanizing. |
| Product Display |
| Package and Delivery |
| The sheets is packed with PVC film or water-proof kraft in the first layer, the second layer is iron sheet package, then wrapped on the metal pallet or metal square tube with steel strip. It's is water-proof and sea-worthy, and warmly welcomed by the customers.OEM accepted, besides, the pakage can also be according to your demands.
Our service
For steel coils, we can cut one large steel coil into small steel coils for loading at seaport; because for container shipping, each container usually loads weight can not be over 26 tons, but each large coil is usually about 28 tons, so one large coils has to be cut into small coils, and because the forklift usually takes 7-10 tons at seaport, so for easy loading into conatiner, each large steel coil usually is cut into 3 small coils. For bulk vessel shipping, it usually demands coils weight under 18 tons, so most times, also need cut one large coil into 2 small coils.
Open flat coils into steel plate.
For final application, need open flat the coils and cut the coils into steel plate, so we open flat the coils and cut the coils to steel plate to the sizes as required. For saving cost for loading by container, load into 20 feet containers, so cut the length under 5800mm, usually as required to cut to length 2440mm and 5800mm, width usually be 1220mm and 1500mm.after cutting the steel coils into steel plate, we can do black paints on the surface of the plate to make the plate to be anti-rust. |
| Guide For Ordering Products |
Q:Are you the factory? A: Yes,our factory are located in Shandong province. Q:How long of your delivery date? * General specification of product is about 14days after received advance payment. * special requirement need about 25-30days. Q:Transportation safety and payment security. We choose the safe and reliable shipping company for the customers, short shipping date and transportation safety. Our account is under the supervision of alibaba, which guarantees the timely delivery and good quality. Q:What countries and regions did you exported? We have exported to America, Canada, Brazil, Chile, Colombia and other American countries.Britain, Russia and other European countries.Ukraine, Thailand, myanmar, Vietnam, India and other Asian countries.South Africa, Cameroon, Ghana, somalia and other African countries. Our export experience is much, familiar with different market demand, can help customers avoid a lot of trouble. |
