*PU lining with single-jacket,made of polyester yarn and polypropylene ... 0.6Mpa,0.8MPa, 1.0MPa, 1.3MPa, 1.6MPa* Inner dia.: 25mm (1"), 40mm (1-1/2"), 50mm (2 ... 1/2"), 77mm (3")*Length: 20m, 25m, 30m*PU lining*high working pressure,no adhesive failure,no leaking,anti-corrision ... ,non-permeable *different colors of lining are available *heavy and soft,beautiful ...