Title:
GUIDE AND PROTECTIVE DEVICE FOR PIPING
Document Type and Number:
Japanese Patent JPS63115981
Kind Code:
A
Abstract:
The invention concerns a system of guidance and protection for the laying of pipes. The system according to the invention includes a sleeve formed by at least two truncated cones, the center of which is traversed by a hole extending essentially axially to said sleeve. The invention applies in particular to inner tubing for pipes.
Inventors:
ROORAN AN
Application Number:
JP19539587A
Publication Date:
May 20, 1988
Filing Date:
August 06, 1987
Export Citation:
Assignee:
GAZ DE FRANCE
International Classes:
F16L1/00; F16L7/00; F16L7/02; F16L55/165; (IPC1-7): F16L1/00; F16L7/00
Attorney, Agent or Firm:
Masaki Yamakawa