Alloy 20 Pipe Alloy 20 Pipes is the chromium, iron-based, and nickel-iron-based austenitic material. The development and production of Alloy 20 Pipes aims to increase their resistance to acid assault, particularly sulfuric acid. The durability and overall corrosion resistance of this alloy 20 round pipe are both good. Additionally, it is capable of resisting crevice corrosion and fitting into...