ASTM z40 Galvanized Steel Coil for roofing / Decor
Hot-dip galvanizing is the reaction of molten metal with an iron
substrate to produce an alloy layer, thereby combining the substrate and the plating layer. Hot-dip galvanizing is to pickle
iron and steel parts first. In order to remove iron oxide on the
surface of iron and steel parts, after pickling, it is cleaned in
an ammonium chloride or zinc chloride aqueous solution or a mixed
solution of ammonium chloride and zinc chloride.And then sent to
the hot-dip plating bath. Hot-dip galvanizing has the advantages of
uniform coating, strong adhesion and long service life.
- Place of Origin:China (Mainland)
- Model Number:CS Type C
- Type:Steel Coil
- Length:Steel Coil
- Description:Galvanized Steel Coil
- Base Metal: CS
- Available Dipped Layers:50-275g/m2
- Inner Diameter:508-610mm
- Available Surface Treatment:Passivating & Oiling & AFP
- HS Code:72104900
- Approved Certificate:CE & SGS
Good Thermal Resistance Machinability Galvanized Steel Coils
Galvanized Steel Coil gets coated in layers of zinc because rust
won't attack this protective metal. The most external layer is all
zinc, but successive layers are a mixture of zinc and iron, with an
interior of pure steel. These multiple layers are responsible for
the amazing property of the metal to withstand corrosion-inducing
circumstances. Zinc also protects the steel by acting as a
"sacrificial layer." If rust does take hold on the surface of
Galvanized Steel Coil, the zinc will get corroded first. This
allows the zinc that is spread over the breach or scratch to
prevent rust from reaching the steel. For countless outdoor,
marine, or industrial applications, Galvanized Steel Coil is an
essential fabrication component.
The Protection Principle
1. Anodic reaction: Zn-2e=Zn2+
(The alloy coating loses electron, sacrificing itself in
2. Cathodic reaction: Fe2++2e=Fe
(Fe gains electron reaction, being protected)
Q: Are you a manufacturer or trading company?
A: We are a specialized manufacturer.
Q: How about discount?
A: Price is based on products and order quantity.
Q: Do you accept sample order?
A: Yes sure, please contact us for details.
Q: How about your after-sales service?
A: As a professional steel exporter, we offer promote technology
support for all problems and questions.
Besides, we accept goods return or replace for quality problem.
Q: How does your company control the quality?
A: Quality first. In order to guarantee high quality for our
Modern always makes a serious inspection for all products and raw
materials in strict procedure.