Demineralized water distribution system standard required

Hi,

I'm looking for international standards for use in a municipal demineralized water distribution system. The majority of the tenants of Ras Laffan require demineralized water, not potable so a demineralized water distribution system is being planned. It is highly desirable that it be built to some recognized international standard and we're looking for at least one.

Yours,

In our factory any Demineralized system for finishing cleaning in pretreatment plant by spraying D.I. water.

Flow process of pretreatment is Degreasing I,Degreasing II,Water Rinse I,Water Rinse II,Surface Condition,Phosphating,Water Rinse III,Water Rinse IV,Demineralized Water. All by spraying.And then oven ,spray painting.

Main product of our company is Full Tank Automotif and Stamping part with material Mild Steel : SPCC, SPCEN, SECC

Which once our question : How many us/cm ( microseamens )standard of Demineralized water for our material SPCC, SPCEN, SECC.

Now condition already test by conductifity tester = 7 us/cm.

Thank you for your information and cooperation.

Thanks & Best Regards