Reservoirs, tanks, vats and similar containers for any material(other than compressed or liquefied gas), of iron or steel, of a capacity exceeding 3L,whether or not lined or heat-insulated,but not fitted with mechanical or thermal equipmen 容积>300升钢铁制盛物容器(容积>300升的囤、柜、桶、罐、听及类似容器),