BHP International

15 Years Of Steel Export Experience

Ductile Iron Pipe Class K12 K9 K8 K7 Supplier

Short Description:

Ductile Iron Pipe Class K12 K9 K8 K7 supplier and manufacturer for 15 years. We are expert of ductile iron pipe. Supply all types of DI Pipes for the municipal water and wastewater distribution, transmission markets, industrial and power markets.

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  • Class: k7, k8, k9, k12, cl 25, cl 30, cl 40, cl 50, cl 52, cl 53, cl 54, cl 56, cl 64, cl 100, cl 150, cl 250, cl 350
  • Product Detail

    Product Tags

    Factory and Warehouse

    Product Form

    Ductile Iron Pipes All Types:



    Ductile Cast Iron



    Joint Type

    T-Type(push-on joint)
    K-Type(Mechanical Joint)
    Flanged joint



    ISO2531, EN545, EN598, etc



    DN80 - DN2600  (80mm - 2600mm)



    K7 K8 K9 K12 C25 C30 C40 50 52 53 54 56 64 100 150 250 350 etc.



    6m, cut to 5.7m




    Internal lining


    1. Portland cement mortar lining
    2. Sulphate Resistant cement mortar lining
    3. High-Aluminum cement mortar lining
    4. Epoxy Resin Lining
    5. Epoxy Ceramic Lining
    6. PU Lining


    External Coating

    Zinc+bitumen coating,
    Customized coating such as Zinc-Epoxy, Alumina Powder, PU, FBE,  Epoxy-Ceramic, etc.


    Rubber Gasket

    NBR rubber, SBR rubber or EPDM rubber ring as per ISO4633



    Potable Water / Drinking Water/Sewage Water



    DN100-DN300 in bundles; DN350-DN2600 in bulk ship



    Our Ductile Iron Pipes available in Class K12, K9, K8, and K7, designed to exceed your water conveyance needs. Crafted with precision from premium-grade ductile iron, these pipes offer superior strength, toughness, and corrosion resistance.

    Class K12 Ductile Iron Pipe is designed to withstand extremely high-pressure applications, making it ideal for critical water mains in urban and industrial settings. Its robust construction ensures exceptional performance, even under heavy loads and adverse conditions.

    Class K9 Ductile Iron Pipe is ideal for high-pressure applications, making it suitable for water mains in urban and industrial settings. Its robust construction ensures long-lasting performance, even under heavy loads and adverse conditions.

    Class K8 Ductile Iron Pipe is engineered to handle moderate to high pressure demands in urban water supply networks and irrigation systems. With excellent resilience, it delivers exceptional performance and requires minimal maintenance.

    Class K7 Ductile Iron Pipe is perfect for lower-pressure applications, such as rural water supply and gravity-fed systems. Its reliable build ensures efficient water transportation, and its longevity reduces operational costs.

    All our Ductile Iron Pipes undergo rigorous testing and comply with industry standards, providing unmatched quality and safety. Their versatility caters to various project needs, offering flexibility in size and pressure ratings.

    Invest in our environmentally friendly Ductile Iron Pipes to experience durability and cost-effectiveness in water conveyance solutions. Upgrade your infrastructure with our top-tier piping options, delivering efficiency and reliability at every turn. Choose Ductile Iron Pipe - Class K12, K9, K8, K7 - and elevate your water transportation systems to new heights.

    Benefits of ductile iron pipe


    Solid under loads

    In underground conditions, the ductile cast iron pipe has a semi-rigid behaviour: it offers an excellent compromise between mechanical stress in the wall (small DN) and ovality (large DN). It can be laid in high and low height of cover, and easily in soil of low rigidity. The ”ground/semi-rigid pipe” system offers optimum mechanical stability over time, without risk of buckling in large DN.


    Insensitive impacts

    The ductile cast iron structure has a high elastic deformability and a high resistance to crack initiation: it results in excellent impact resistance. The cast iron pipes are perfectly suited to transport conditions over long distances (truck, train or ship), handling conditions on sites and to different types of backfilling. The ductile cast iron pipelines may be laid in very difficult areas: rocky mountain slopes for hydroelectric plants, crossings for cantilever bridges, rockfill for submarine outlets.


    Push-in joint system

    Quick and self-sealing, the watertightness of the STANDARD push-in joint results from radial compression of the sealing ring (1), by simply inserting the spigot ends into the socket. It does not require any tightening of bolts or a welding process.
    The STANDARD “push-in” joint is ideally suited for laying in trenches or overhead, irrespective of weather conditions.

    Excellent hydraulicity

    The centrifugation process ensures a perfectly smooth and even cement surface. The Colebrook roughness coefficient of an isolated pipe is k = 0.03 mm. We recommend the use of an average value of k = 0.1 mm for sizing networks in order to take into account all the different load losses caused by singular points (tee fittings, elbows, valves, etc.)


    Pressure resistance

    The ductile cast iron pipe are designed to withstand pressures much greater than the values usually encountered on the networks. The wall thickness is calculated with a safety factor of 3 with respect to the maximum operating pressure. This additional safety margin is very useful to the impacts during installation, accidental overpressure and mechanical operating fatigue.

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