The main reason stocks in the steel sector are on fire today is because overnight the Commerce Department escalated its trade war with China when it implemented the latest clampdown on a glut of steel imports, when it announced that corrosion-resistant steel from China will face final U.S. anti-dumping and anti-subsidy duties of up to 450%. The final U.S. anti-dumping duties on the Chinese products replace preliminary ones of 256% issued in December 2015.