In City of Yokohama, Water Works Bureau, we use S50 form ductile cast iron pipe as the standard plumbing materials in the water pipe update construction to contract after April, 2015.
Company undertaking construction using this pipe, please confirm the latest edition of "special mention specifications about construction using S50 form ductile cast iron pipe" listed in the water supply works construction point by all means and Water Works Bureau design standard figure.
Materials (standard) to adopt
- S50 form ductile cast iron pipe (JDPA G 1052)
- S50 form ductile cast iron pipe (short pipe 1, short pipe 2, henrakukan) (Yokohama-shi shape charges)
- S50 form software seal valve (Yokohama-shi shape charges)
- Call; diameter 50 cleaning stopper (Yokohama-shi shape charges)
- Corporation cock (Yokohama-shi shape charges) with saddle for S50 form
- Polyethylene sleeve (JWWA K 158 conformity product) for S50 form
※As application is necessary when production of Yokohama-shi shape charges is hoped for, we would appreciate your asking Water Works Bureau water supply section.
Inquiry about water supply to Water Works Bureau customer Service Center