concrete nails per kg

Small iron wire is very useful in our life, basically a lot of things will use iron wire, and iron wire can also be made into a lot of crafts, making ordinary iron wire become more aesthetic and artistic sense. Of course, the iron wire in the process of use, there will be rust, so galvanized black iron wire in the storage process, it is necessary to master the correct method.

The main difference between the two is the carbon content. The carbon content of iron is 2.11 percent or greater, while the carbon content of steel is 2.11 percent or less. The iron carbon alloy with carbon content above 2.11% is cast iron (pig iron), which is basically not malleable and cannot be drawn into wire. Secondly, the content of impurities is different. The content of harmful impurities such as sulfur and phosphorus in steel is smaller. Steel wire general color focus, iron wire color light point, white point.