Abstract: A tubular element for passing flowable media, particularly chemically aggressive media, has a tubular member bounding an inner passage, a synthetic plastic lining cladding the member within the passage, and means for supporting a member which is to be movably accommodated in the passage. The supporting means includes a plurality of portions of the synthetic plastic lining projecting transversely of the passage from circumferentially spaced locations of the same. At least some of the portions are axially aligned with one another in transverse direction of the passage. Three such portions may be provided in the tubular element. The tubular element may have means for reinforcing the portions of the lining, which may be formed as a plurality of shaped inserts supported on the tubular member and operative for backing the portions of the lining. The inserts may be ceramic, metallic or may be constituted by a synthetic plastic material hardened in hollows between the projecting portions and the tubular member.

Abstract: A hose member of synthetic plastic material is surrounded by a pressure-resistant armor and is provided at its opposite ends with mounting sleeves which surround the armor. At least one of the ends of the hose member extends axially beyond the associated mounting sleeve. Two connecting members are provided at the opposite ends, each having a nipple which extends into the hose member and which is formed with an externally enforcing bead surrounded by an axially intermediate portion of the respectively associated mounting sleeve. The nipples are retained against axial movement relative to the hose member by a retaining portion.