... and plug for 200-liter(55 US gallons) drum/barrel Material: iron/tin, zinc plated The main parts of ... position nut before using. Widely used in cap (lid), drum (bucket), can making, lubricant, paint manufacturing , chemical, petroleum, grain&oil ... : iron/tin, zinc platedWidely used in cap (lid), drum (bucket), can making, lubricant, paint manufacturing , chemical, petroleum, grain&oil and ...