... with ISO 2531, K9, L=6000mm, T-Type joints, Internally Portland Cement mortar lining according to ISO 4179-85, Externally Zinc + Bitumen ... , PVC, Nylon injection parts.++Mold Design.Material available: Ductile Iron, Gray Iron, Stainless Steel, Carbon Steel, Alloy Steel, Brass Alloy, Aluminum ...