... . To make sure the safety, we strictly hire the most experienced wokers, welders, installing group.We use three different materials on the tank, ... stainless steel, Q235A mild steel, or PE, we will see your specific needs and request, and suggest you the best choice.To ... 25-20Number of axles 2Equipments There are three options on the tank material and their characters:1) Stainless steel, with ...