Steel wire is a kind of multifunctional wire. It can be made of carbon steel, stainless steel, copper, aluminum and other materials. High strength materials make it can withstand heavy things as hanging wire without damaged. We also have different types of steel wire, such as, coil wire, U type wire and straight cut wire. You can choose suitable one depends on your use. If you buy it as binding wire, you can choose coil wire, straight cut wire or others. In addition, we also have different surface treatments. These make steel wire is not easy to be corroded although in the bad environments.