Dredging Pump Impeller

The impeller structure of the Dredging Pump is either closed or semi-open, with a wide flow channel. It can handle particles with a maximum diameter of up to 240 mm (for the 1000WN model). It offers interchangeable impeller sizes with mainstream models such as the Warman WN series, G/GH sand and gravel pump series, ZJ series, and SP/SPR vertical pumps, supporting custom drawings and reverse mapping. It is widely used in cutter suction dredgers, sand mining vessels, river dredging, port and channel maintenance, offshore land reclamation, reservoir cleaning and other projects.

Among dredgers, sand pumps, and dredging pumping stations, the Dredging Pump Impeller is the core working component that directly "consumes wear". When the medium contains sharp particles such as quartz sand, river sand, gravel, and shells, the monthly average wear of the ordinary cast iron impeller can reach 2–3 mm. The high manganese steel impeller, under weak impact conditions, has insufficient work hardening effect and poor wear resistance. The Dredging Pump Impeller is made of high chromium white cast iron (KmTBCr26 / KmTBCr28), with a chromium content of 23–30%. M₇C₃ type carbides are precipitated in the matrix - this is one of the hardest phases in nature, with a microhardness of HV 1300–1800, which can effectively resist the cutting and erosion of solid particles. Combined with quenching + reheat treatment, the overall hardness is stable at HRC 58–63, balancing high wear resistance and impact toughness. In a dredging project at the mouth of the Yangtze River, it was measured that the lifespan of the traditional high manganese steel impeller was only 600 hours, while the Cr28 precision cast Dredging Pump Impeller had a lifespan of over 8,000 hours, an increase of more than 13 times.

The Dredging Pump Impeller can precisely match the following mainstream models according to customer requirements:
WN series dredging pumps: 200WN, 250WN, 300WN, 350WN, 400WN, 450WN, 500WN, 600WN, 700WN, 800WN, 900WN, 1000WN, 1200WN - full series impellers
G/GH sand and gravel pump series: 6/4D-G, 8/6E-G, 10/8F-GH, 12/10G-GH, 14/12T-GH, etc.
S/H dredging pump series: 6/4D-S, 8/6E-SH, 10/8F-SH, etc.
ZJ/ZJS series: 100ZJ, 150ZJ, 200ZJ, 250ZJ, 300ZJ, etc. - various model impellers
SP/SPR vertical submersible pumps: 40PV-SP, 65QV-SP, 100RV-SP, 150SV-SP, 300TV-SP, etc.
Warman interchangeable series: AH series E4110/E4130/E4147, etc. impeller codes

Customized Services:
Design Based on Original Drawings: Provide the CAD drawings or physical samples of the original impeller, and we will either replicate or optimize the design at a 1:1 scale.
Reverse Measurement: Send the worn impeller sample, and we will scan and model it along with material analysis, then reverse calculate the original dimensions.
Material Upgrade: Standard A05 → A07 → A12/A61 → High-chromium alloy + tungsten carbide cladding composite layer
Hydraulic Optimization: Based on CFD simulation, optimize the blade outlet angle, wrap angle, and flow channel profile, achieving energy savings of 8–15%
Special Operating Conditions: High-temperature resistant type (≤350°C), corrosion-resistant type (duplex stainless steel A33), ultra-fine particle type (polyurethane coating)
Quality Control Documents: Each batch of shipment comes with a material report (spectroscopy analysis), hardness test report, dynamic balance report, size inspection report, and ultrasonic testing report.
Packaging and Logistics: Single piece wrapped in foam and placed in a wooden box. For bulk shipments, standard fumigated wooden boxes are used for global shipping/air transportation.

2. Super-durable material, leading the industry in daily life
Selected from top Chinese casting factories, high-chromium alloys (Cr26 ~ Cr28) and rubber liners are used. The wear resistance is three times higher than the industry standard; with a monthly casting capacity of 1,000 tons, the hardness is Hrc60 + after heat treatment, and the product lifespan is extended by 2-5 times.
3. Achieve Agile Delivery, Ensure Global Supply Security
Support 20-day small batches and 45-day large batches; collaborate with multiple international logistics companies to offer various delivery solutions, serving 100+ countries; maintain inventory of frequently used and easily damaged parts to reduce downtime.
4. Full-process quality control, zero worries about after-sales
100% factory inspection: Each pump undergoes 36-hour no-load/load testing, dynamic balance calibration and 3D scanning inspection, with a defect rate of <0.3%.
Lifetime technical support: Provide selection survey, installation guidance and 24-hour fault response, and provide after-sales problem solutions within 48 hours.

Q2: What is your minimum order quantity?
Answer: The minimum order quantity is 1 set (stock model or custom order). Bulk orders (> 5 units) are eligible for a discount.
Q3: Which payment methods are supported?
Answer: T/T (30% deposit, balance before shipment).
Letter of Credit (irrevocable, accepted by major banks).
Western Union/Paypal (for small orders <$5,000).
Q4: How long is the delivery time?
Answer: Inventory pumps: 7 working days (from factory, standard specifications).
Customized pumps: 40 working days (including design, casting and testing).
Q5: What materials need to be provided for the quotation?
A: Flow rate (m³/h); Head (m); Medium; Solid content; pH value;
Maximum particle size (mm); Slurry density; Voltage (V); Frequency (Hz); Additional information.
Q6: Are OEM parts available?
Answer: Yes, we offer complete OEM/ODM support, including:
Material upgrades: Cr27-Cr30, natural rubber or polyurethane lining.
Design modifications: Impeller channels, sealing systems (packing and mechanical).
Performance adjustments: Efficiency optimization for specific slurry types.
Branding: Laser engraving or casting your logo.

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