Over three million bathtubs, including whirlpool baths and hot tubs, are shipped per. The metal base for bathtubs is made of gray cast iron (containing carbon,. . I have acquired an old cast iron bath tub with the following info molded into the
Unlike the plain molded fiberglass tubs popular today, some of the earliest bathtubs were intricately carved wooden cabinets lined with tin or copper. Next came .