Water Treatment Plant Construction Ductile Iron Double Pipe Fittings Double Flange Cast Pipe with Puddle Flange
Brand TOPSUN
Product origin China
Delivery time 30 days
Supply capacity 10,000 tons per year
Engineered for critical infrastructure, our ductile iron double flange cast pipe and double pipe fittings are the preferred choice for water treatment plant construction. They are specifically designed to handle high pressures and resist corrosion in demanding applications such as intake lines, process circulation, and effluent discharge. Our puddle flange solutions are integral for creating secure, watertight seals where pipes penetrate concrete structures, a common requirement in basin and tank construction. These components are trusted by major municipal contractors, with a proven track record in numerous large-scale plant upgrades and new builds.
Our production strength is demonstrated through advanced, automated foundry processes and rigorous quality control, ensuring every ductile iron fitting meets international standards for strength and durability. Continuous investment in research and development has led to superior internal linings and external coatings, significantly extending the service life of our double flange pipes in aggressive chemical environments. This technical commitment has fostered successful collaborations with global engineering firms, solidifying our reputation as a reliable technical partner for complex projects.
To support urgent project timelines, we maintain a substantial inventory of standard-sized double pipe fittings and puddle flanges, enabling fast-track delivery worldwide. Our high-volume manufacturing capacity and streamlined logistics ensure a consistent supply, contributing to our strong annual sales growth across North American, European, and Asian markets. This operational reliability guarantees that your water treatment projects proceed without delay, backed by readily available, high-quality piping components.
Range of Sizes | DN50-DN2000(2''-80'') |
Flange Standard | PN10, PN16, PN25, PN40 |
Design Standard | ISO2531, BS EN545, BS EN598, EN12842, AWWA C110, AWWA C153 and etc |
End Connection | Flange or Spigot Socket |
Internal Coating | Cement Mortar Lining / Fusion Bonded Epoxy Coating |
External Coating | Zinc-Rich Coating +Bitumen Painting / Fusion Bonded Epoxy Coating |
Tensile Strength | >= 420 N/MM2 |
Elongation | >= 5% |
Brinell Hardness | <= 250 HB |
Pressure Test | DN80-300mm >=25bar, DN350-600mm >=16bar, DN700-1600mm>=10ba |
Ductile iron pipe, especially configurations like double-flange cast pipe with puddle flanges, is the preferred choice for critical water treatment applications due to its superior performance characteristics.
Its foremost feature is exceptional strength and durability. The nodular graphite microstructure gives it high tensile strength, impact resistance, and excellent load-bearing capacity, making it resistant to ground movement and heavy external pressures. Furthermore, ductile iron offers outstanding corrosion resistance. Pipes are typically protected with a cement-mortar or epoxy lining for internal corrosion prevention and a robust polyethylene encasement or zinc coating for external defense, ensuring a long service life even in aggressive soils and conveying treated water.
The double-flange design, often used with puddle flanges for seamless penetration of concrete walls or tanks, provides significant installation advantages. It allows for a rigid, bolted connection system that is simple to assemble, highly secure, and easily accessible for maintenance. This design eliminates the need for complex field welding, saving time and labor. The material's inherent pressure resilience ensures reliable operation across the entire network, from low-pressure gravity lines to high-pressure pump discharges, making it an exceptionally versatile and dependable solution for the demanding environment of a water treatment plant.
Ductile iron pipe, particularly in double-flange configurations with puddle flanges, is indispensable in water treatment plant construction for its robustness and sealing reliability. Its primary application is within the plant's process piping network, where it is used to convey raw water, treated water, and chemical slurries under significant pressure.
The double-flange design is ideally suited for connecting key equipment such as pumps, filters, valves, and clarifiers. It creates rigid, bolted connections that can withstand high thrust forces and vibration, ensuring alignment and system integrity. The critical feature, the puddle flange, is specifically engineered for watertight penetration of concrete structures like reservoir walls, treatment tanks, and basins. It acts as a permanent seal, preventing water leakage and soil infiltration at these vulnerable points.
These pipes are also extensively used for intake and discharge lines, interconnecting pipe bridges, and housing inline instrumentation. Their high corrosion resistance makes them suitable for aggressive environments, including areas with chemical dosing. The mechanical joint integrity of double-flange fittings guarantees a leak-free system, which is paramount for maintaining hydraulic efficiency, preventing contamination, and ensuring the structural safety of the plant's concrete foundations.
This product is a specialized Ductile Iron Pipe engineered for high-integrity applications in water treatment plant construction and other critical civil infrastructure projects. It is manufactured as a Double Flange Cast Pipe, meaning it is a single, seamless spool piece with a flanged end on both sides, eliminating the need for separate flange attachments and ensuring superior joint integrity.
The defining feature of this product is the integrated Puddle Flange (also known as a wall sleeve or penetration flange). This is a radially cast, or welded-on, collar situated around the pipe's circumference. Its primary function is to provide a permanent, watertight seal where the pipe penetrates concrete structures such as reservoir walls, treatment tanks, sumps, or containment basins. During construction, the puddle flange is cast directly into the concrete, effectively anchoring the pipe and preventing the migration of water or soil, thereby safeguarding the structure's integrity.
Constructed from high-grade ductile iron, the pipe offers an exceptional balance of strength, toughness, and durability. Its microstructure provides high tensile strength and excellent impact and fatigue resistance, capable of withstanding significant internal pressures, external loads, and ground movement. To ensure long-term performance in corrosive environments, the pipe is typically furnished with robust protective linings, such as cement mortar or epoxy, and external coatings like polyethylene sleeving or fusion-bonded epoxy.
The double-flange design facilitates rapid and secure bolted connections to pumps, valves, filters, and other pipeline components, simplifying installation and maintenance. This combination of mechanical robustness, corrosion resistance, and integrated sealing technology makes this pipe system a reliable and preferred choice for ensuring a leak-free and long-lasting piping network within a water treatment facility.
CUSTOMERS & MARKET
Q: What's your qualification in this product ?
A: We have been engaged in this industry for decades with seasoned export team. All the product is strictly conformed to the international standard ISO2531:1998,EN545-2002 and other related standard.
Q: How long is your delivery time ?
A: Generally it is 5-10 days if the goods are in stock. or it is 20-30 days if the goods are not in stock, it is according to quantity.
Q: What's your terms of payment ?
A: 30% T/T in advance , balance before shipment or against L/C . And D/P , D/A ,L/C for free options.
Q: What's your trade terms ?
A: FOB , CIF , CFR as per client's requirements.
If you have any other questions , please feel free to contact us.
