Glazed cast iron teapots for wholesale purchase. Glazed cast iron teapots are renowned for their durability, ability to retain heat, and easy to clean nature. With enamel on both inside and outside, our glazed iron pots do double-duty as both a kettle and a teapot. Use them on any heating surface to heat water, then steep leaves in the same vessel. Beautiful as they are functional, these do well in both food service and retail shops for great gifts and elegant table settings.