219 Spiral steel pipe

219 Spiral steel pipe in the use of different occupations, in accordance with certain processing and production technology produced and produced, in the construction of the construction to display important results and value. Spiral steel pipe is welded pipe axis relative to the spiral into the pipe. Mainly used for transport pipes, pipe piles and some layout with the tube. As the spiral steel pipe line carrying pressure increasing, the increasingly stringent conditions of use, and to extend the life of the pipeline as far as possible.