Sleeve pipe for installation set and telescopic installation set, has non telescopic sleeve pipe, upper sleeve pipe and lower sleeve pipe, sleeve pipe of installation set is formed as clam-shell

摘要

The pipe has a non telescopic sleeve pipe, upper sleeve pipe (1) and a lower sleeve pipe (2). The sleeve pipe of the installation set is formed as clam-shell and the outer sleeve pipe (4) consists of firm and corrosion resistant material and the inner sleeve pipe (3) consists of soft and corrosion resistant material. The outer sleeve pipe and the inner sleeve pipe are put into each other.