PRODUCT CENTER
About US
Qingzhou Sanlian Heavy Industry Equipment Manufacturing Co., Ltd. is a leading professional manufacturer and large-scale processing enterprise integrating scientific research and development, engineering design, production, installation, and commissioning services.
Our main products include: dredgers, gold dredgers, sand dredgers, gold mining equipment, waste sorting equipment, wheeled sand washers, bucket sand washers, spiral sand washers, crushing and sand-making equipment, greenhouse equipment, vibrating screens, and more.
Our products are sold worldwide, including to Mali, Benin, Nigeria, Pakistan, Indonesia, Malaysia, Serbia, Ukraine, and many other countries across Africa, Asia, and Europe.
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production photos
Main Products
The main products are: dredgers, Gold dredger,sand dredger ,wheeled sand washing machine, bucket sand washing machine, spiral sand washing machine, greenhouse equipment, vibrating screen and so on.
Product Usage
Our mineral processing machineries and equipment have the characteristics of low cost, high efficiency and easy operation. It can be completed at the same time of sand mining, screening, separation process and one-time production of qualified products, especially for surface and underwater resources-rich rivers, ponds and abandoned battlefield.
Services
We provide transportation, installation commissioning, training operators and spare parts for users. In after-sales service, we have established a perfect customer service system. Each set of equipment and spare parts have maintenance, providing repairing convenience and efficient after-sales service. We design special-shaped products to meet different customers' needs according to terrain environments and actual requirements.
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Overseas case studies
Why Choose Us?
Rich product series
Full range of categories and multi-specification adaptation: Different sizes are available for the same category.
Significant price advantage
Optimizing costs and supply chain, providing competitive prices, high cost-effectiveness.
Quality service
Provide one-stop, personalized professional services.
Global sales network
The products are sold well at home and abroad and are widely favored by customers.
News
![Real-World Case Study: How a Southeast Asian Contractor Increased Gold Recovery by 32% with a Custom Sand Dredger]( "Real-World Case Study: How a Southeast Asian Contractor Increased Gold Recovery by 32% with a Custom Sand Dredger")
Jan 27, 2026Real-World Case Study: How a Southeast Asian Contractor Increased Gold Recovery by 32% with a Custom Sand Dredgersand dredger, gold dredger & dredger solution: See how a custom sand dredger boosted gold recovery by 32% in Southeast Asia—proven ROI, real-world performance.Learn More +![Why Delivery Lead Time Matters More Than Ever for Dredger Buyers in 2024]( "Why Delivery Lead Time Matters More Than Ever for Dredger Buyers in 2024")
Jan 27, 2026Why Delivery Lead Time Matters More Than Ever for Dredger Buyers in 2024sand dredger, gold dredger & dredger buyers: Discover why 2024’s top priority is delivery lead time—and how Qingzhou Sanlian cuts it by up to 60% without compromise.Learn More +![Cost Breakdown: Sand Dredger Acquisition, Operation & ROI Analysis for Small-Scale Contractors]( "Cost Breakdown: Sand Dredger Acquisition, Operation & ROI Analysis for Small-Scale Contractors")
Jan 27, 2026Cost Breakdown: Sand Dredger Acquisition, Operation & ROI Analysis for Small-Scale Contractorssand dredger, gold dredger & dredger cost breakdown: acquisition, operation & ROI analysis for small-scale contractors—get actionable TCO insights now!Learn More +![Top 5 Maintenance Tips for Gold Dredger Operators to Extend Equipment Lifespan]( "Top 5 Maintenance Tips for Gold Dredger Operators to Extend Equipment Lifespan")
Jan 27, 2026Top 5 Maintenance Tips for Gold Dredger Operators to Extend Equipment LifespanGold dredger, sand dredger & dredger maintenance tips from Qingzhou Sanlian—extend lifespan, boost uptime & ROI with 5 field-proven strategies.Learn More +![How to Choose a Reliable Dredger Supplier: Key Factors for Procurement Teams in 2024]( "How to Choose a Reliable Dredger Supplier: Key Factors for Procurement Teams in 2024")
Jan 27, 2026How to Choose a Reliable Dredger Supplier: Key Factors for Procurement Teams in 2024Looking for a reliable sand dredger, gold dredger, or versatile dredger? Discover 7 proven criteria to choose the right supplier in 2024—performance, support & real-world validation included.Learn More +![Sand Dredger vs Gold Dredger: Which Is Better for Your 2024 Mining Project?]( "Sand Dredger vs Gold Dredger: Which Is Better for Your 2024 Mining Project?")
Jan 27, 2026Sand Dredger vs Gold Dredger: Which Is Better for Your 2024 Mining Project?Sand dredger or gold dredger? Discover which purpose-built dredger maximizes efficiency, ROI & compliance for your 2024 mining project—engineered by Qingzhou Sanlian.Learn More +
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