product vantage: low noise, corrosion resistance, superior strength, low thernal expansionrates, fire resistance,
The raw material is the grey iron above index 15 according to ISO 185- 1961. contrasted to steel, it features its firm, endurance, low noise, especially corrosion resistant. It will not distort under the 400, and no corrosion in the soil between PH2 and PH12. it is no need to fire resistant for its nature, and the noise will be suppressed by the rubber gasket coupling the pipe and fitting in the drain system.
