Studded tubes(Stud fin tube) are relatively easy to clean and are used in furnaces and fired heaters as an alternative to high frequency welded fin tubes where ever the process is such that rapid fouling of the service may occur The studs are attached to the pipe in diametrically opposing pairs around the circumference by electrical resistance welding to ensure a high integrity bond for strength and heat flow Stud diameter, height and pitch can be specified on an indiviual basis. Welding tests are carried out as a matter of course to ensure the effectiveness of the stud to pipe bond. Heat treatment of the completed studded tube is carried out where necessary. Should fouling eventually reduce the process perfomance of the equipment the studded surface can be cleaned efficiently by shot blasting without damage to the materials.