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About adoption of the internal epoxy resin powders painting of ductile cast iron pipe

Last update date March 4, 2019

Summary

 In City of Yokohama, Water Works Bureau, the internal painting of ductile cast iron pipe (direct pipe) used mortar lining, but, from April 1, 2018, adopts the epoxy resin powders painting.

Application standard

 Direct pipe of ductile cast iron pipe from diameter 50mm to 400mm assumes principle, internal epoxy resin powders painting pipe.

Instructions

 As for the drill to use in perforation work, 100 degrees from 90 degrees, torsion angle, please use thing from 5 degrees to 30 degrees the tip corner.
 Polyethylene sleeve, please use "powders painting pipe" of JAPAN WATER WORKS ASSOCIATION standard "JWWA K 158" and displayed thing.

Image about indication example of polyethylene sleeve
Indication example of polyethylene sleeve

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Water Works Bureau water supply department water supply section

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Telephone: 045-671-3064

Fax: 045-212-1167

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