The Ductile iron pipes is confim to ISO2531, ISO4179, ISO8179, ISO4633, ISO7186, EN545, EN598, BS4772 Standard. DUCTILE IRON PIPES:Mechanical (K-type) jointSIZE RANGE: From DN100mm to DN2600mm STANDARDS FOLLOW:ISO2531, ISO4179, ISO8179, ISO4633, ISO7186, EN545, EN598, BS4772 and other equivalent standards.EFFECTIVE LENGTH: 5.5 or 5.7 or 6 meters.WALL THICKNESS:K9 is the normative one; we can ...