Porcelain Tubes are very much similar to glass tubes in shape and size but may differ in function. In laboratory, glass tubes are generally used for heating or mixing of chemicals. While porcelain tubes may be used only for the purpose of containing substances in labs. However, this particular item has wide application in electrical, plumbing and pneumatics field.
Generally, porcelain tubes used in the electrical field are cylindrical in shape with both the ends open. In the electrical domain, these are used to carry an insulated conductor where it passes through a wood joist, stud, etc. Therefore, the arrangement restricts the negative effects of an electrical wire that may otherwise be harmful if left exposed.