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Technical Details


    1. Chemical Analysis
    Composition C Si Mn P S Mg
    Rate 3.5-4.0% 1.8-2.6% ≤0.40% ≤0.08% ≤0.02% 0.04-0.08%

    2. Mechanical Properties
    Item Tensile Strength (N/mm2) Elongation (%) Hardness(HB)
    DN80-DN2600 DN80-DN1000 DN1100-DN2600 DN80-DN2600
    Pipe ≥ 420 ≥ 10 ≥ 7 ≤230
    Fitting ≥ 420 ≥ 5 ≤250

    Note: Proof Stress may be measured by agreement between the manufacturer and the purchaser.


    3. Minimum Works Hydrostatic Test Pressure (unit: Bar, during time: 10s)
    Nominal DiameterCentrifugal PipeFittingWeld-on/Screwed-on Flange Pipe
    DN(mm)K<9K≥9Preferred C ClassPN10PN16PN25PN40
    80-3000.5(K+1)250402516253240
    350-6000.5K2403016
    700-10000.5(K-1)2322510
    1100-20000.5(K-2)2252510
    2200-26000.5(K-3)2182510

    4. DUCTILE IRON PIPE PUSH ON JOINT T-TYPE DIMENSION CHART (K9/K8/C)
    DN(mm)DE(mm)Wall Thickness(mm)Approximate Weight of Socket(kg)UNIT WEIGHT L=6M (kg/PC)Preferred Calss
    Nominal DiameterOutside DiameterK9K8CK9K8C
    80986.06.04.43.40777759C40
    1001186.06.04.44.30959471C40
    1501706.06.04.57.10144138106C40
    2002226.364.710.30194183146C40
    2502746.865.514.20255228210C40
    3003267.26.46.218.60323290282C40
    3503787.76.86.323.70403359335C30
    4004298.17.26.529.30482433394C30
    4504808.67.66.938.30577515472C30
    5005329.087.542.80669600566C30
    6006359.98.88.759.30882791783C30
    70073810.89.68.879.101,1231,009932C25
    80084211.710.49.6102.601,3941,2551,165C25
    90094512.611.210.6129.901,6901,5211,446C25
    1000104813.51211.6161.302,0171,8111,759C25
    1200125515.313.613.6237.302,7582,4822,482C25
    1400146217.115.215.7385.803,6693,2073,403C25
    1600166818.916.817.7375.404,6684,2134,408C25

    * Any other questions, please feel free to contact us.


    5. Lining and Coating of Pipe and Fitting

    LiningCoating
    1Ordinary Portland CementBituminous Paint
    2High Alumina CementSynthetic Resin Paint
    3Sulphur-resistant CementEpoxy
    4EpoxyPolyurethane
    5PolyurethanePolyethylene sleeving