To provide an apparatus for lining piping capable of lining the inner surface of the piping from one side end over a full length of the piping including an elbow pipe even if including the elbow pipe, and a construction method of lining existing piping using the apparatus for lining piping.
The apparatus for lining piping comprises a front end side pig 1, a rear end side pig 2, and a pig 3 for push-insertion connected together in this order wherein an operating member 6 for pushing and pulling is connected to the pig 3 for push-insertion, the rear end side pig 2 and the pig 3 for push-insertion are connected with a rear end side spring wire 5 having flexibility, and the front end side pig 1 and the rear end side pig 2 are connected with a front end side spring wire 4 having flexibility which is softer than the rear end side spring wire 5. The construction method of lining comprises coating with lining material L the inner surface of an existing piping P1 with elbow pipes P2 for town gas laid down in a housing site C using this apparatus for lining.
URAKAWA TOSHIO
MIYAZAKI EIJI
Kunihiko Higashi