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10 octobre 2013

Benefits of Cold Galvanizing more than Hot Dip Galvanize

Hot-dip galvanisation can be a type of galvanisation. It is actually the method of coating iron, steel or aluminium using a thin zinc layer, by passing the metal by means of a molten bath of zinc at a temperature of about 460 °C. When exposed to the atmosphere, the pure zinc reacts with oxygen to type zinc oxide, which further reacts with carbon dioxide to kind zinc carbonate, a usually dull grey, fairly strong material that stops further corrosion in many circumstances, protecting the steel below from the elements. Galvanized steel is widely used in applications where rust resistance is needed, and can be identified by the crystallization patterning on the highway guardrail suppliers.

This article exhibit several positive aspects more than conventional hot-dip galvanizing techniques, as follow:
1. On-Site Application : the hot-dip method involves large tanks of molten zinc, which require the customer to ship their metal parts to the galvanizer where they wait in line with other jobs. Once dipped, the parts are shipped back. On the other hand it can be easily applied like a paint by spray, brush or roller by anyone, anywhere on their own schedule. In the plant, on the jobsite, there is no limitation on use and no large shipping bills.

2. Cold Application : the hot-dip galvanizing approach is done at 850F. This high temperature can warp and embrittle thin gauge metals. Hot dipped galvanized steel pipe produced by galvanized pipe suppliers is applied at ambient temperature with no heat. No warping ensures a good fit of parts during erection, and no breakage.

3. More Flexible Film: Hot-dip galvanized steel pipes, being a fused metal coating is very hard. This can bevery useful in some applications. However, the flip side of the coin is that this hardness alsoequates to steel pipes manufacturer bend resistance. If you were to bend or impact a galvanized galvanized steel tube, chances are greater that the zinc coating will chip and break off, exposing the underlying steel to corrosive attack. Steel that is coated with Zinc Rich Primer can be bent and impacted with absolutely no damage to the zinc surface even when bent more than 180 degrees. What does this mean to you? If your fabricated item needs to be adjusted for fit at the jobsite , it offer the best chance for coating success, thereby reducing expensive downtime that could occur should you need to order new hot dip galvanized items to replace the broken ones.

No Additional Preparation needed to Topcoat: In order to topcoat a hot-dip galvanizing plant, you must first spend some considerable time preparing the zinc surface to accept the topcoat. With galvanized pipe suppliers, you apply the topcoat directly more than the zinc-coated surface without any additional preparation.When you ship your metal items to a galvanizing plant, you have no control more than the quality of your zinc coating. IN comparison, when you apply galvanized pipe suppliers in your own plant or on your jobsite, you completely control the quality of the zinc-coating application.

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