... to ISO2531, ISO4179, ISO8179, ISO4633, ISO7186, EN545, EN598, BS4772 Standard. DUCTILE IRON PIPES:Mechanical (K-type) jointSIZE RANGE: From DN100mm to DN2600mm STANDARDS ... ;Ø Thicker Metallic Zinc with finishing layer;Ø Polyethylene;Ø Epoxy;PACKING:The pipes of DN≤300mm are bound with steel belts, others are ...