Premium wear-resistant submersible solutions designed to operate continuously in river dredging, mining, and civil construction sumps across Paraguay.
As a landlocked South American nation relying heavily on the Paraguay-Paraná river system (Hidrovía) for international trade, Paraguay's economy is highly dependent on continuous dredging operations to maintain navigable channels. Severe dry seasons dramatically lower water levels, causing cargo barges loaded with agricultural exports (soybeans, corn, beef) to ground. High-capacity, abrasion-resistant submersible slurry pumps are vital to rapidly excavate river sand, clay, and alluvial sediments.
Additionally, the rapid expansion of municipal wastewater networks in urban centers like Asunción, Luque, and Ciudad del Este has created a surge in demand for reliable sewage grit pumps. The agricultural processing sector, industrial sumps, and local concrete and quarry aggregates require heavy-duty vertical and submerged pumps that can withstand high concentrations of abrasive suspended solids without premature impeller failure.
By implementing state-of-the-art Chinese manufacturing standards, Paraguayan enterprises can achieve major operational cost savings, reducing replacement frequency and increasing energy efficiency in crucial dredging operations.
Modern fluid dynamics engineering is undergoing a digital revolution. Global procurement trends focus heavily on energy efficiency and high-wear resilience. Advanced metallurgy, such as high-chrome alloys (up to 28% chromium content) and structural silicon-carbide ceramics, has emerged to extend pump lifespans in aggressive erosion-corrosion environments.
Chinese factories are at the absolute forefront of this innovation. Due to fully integrated industrial chains, advanced CNC casting automation, and heavy structural investments, manufacturers in China deliver high-performance equipment with a performance-to-cost ratio unmatched in Western markets. The capability to execute structural customization, such as supplying custom 3D drawing confirmations within 24 hours, ensures that Paraguayan municipal projects can receive tailor-made configurations directly compatible with regional electrical grids (50Hz frequency, specific local voltage structures).
Additionally, modern logistics paths through major maritime corridors allow seamless cargo distribution, ensuring that replacement impellers, shafts, and casing components reach South American ports efficiently, avoiding long operational downtimes.
A publicly traded market leader with over 50 years of design, manufacturing, and international deployment experience.
Shandong Zhangqiu Blower Co., Ltd. (Formerly name: Shandong Zhangqiu Blower Works) is a company with over 50 years’ blower design, manufacture technology and experience. We set up two Sino-Japanese Joint-ventures and one USA branch that of 1st company in China blower industry establishing oversea branch. We are the leading enterprise in Zhangqiu local industry and main product-Roots Blower’s market occupancy is top-ranked in China blower industry.
Overall developing strategy: “Develop main business, pioneer new fields and innovate, cooperate to be a great company”. Working concept: “Do the best”. Now we are a modern company integrated the design, manufacturing and sales on products of: Roots Blower, Centrifugal Blower, Fan, Industrial Pump, Pneumatic Conveying System, Electrical Equipment, MVR Evaporation, Concentration and Crystallization system, Waste Water Treatment Product and Service and etc.
In July, 7th, 2011, the company was publicly listed on Shenzhen Stock Exchange center. Stock code: 002598. This marks a great development milestone for our global footprint.
In 2020, the parent company of Zhang Drum realized operating income of 1.5 billion yuan and profit of 150 million yuan (including Zhang Drum and its participating holding companies). Zhang drum company has 20 holding companies, and has set up four manufacturing bases in Jiangsu Wuxi, Guangdong Dongguan, Hunan Chenzhou, and Gansu Jinchang, with four dedicated R & D centers located in Beijing, Shanghai, Shijiazhuang, and Wuxi.
ZhangGu company is the leading enterprise of Zhangqiu industry. The dominant product Roots blower domestic market share has been ranked first in the industry. The company continues to advocate technological innovation, the creation of Zhangqiu City, the first provincial-level enterprise technology center, mainly for the Roots blower (Roots vacuum pump) and its supporting products; multi-stage centrifugal blower, single-stage high-speed centrifugal blower and its supporting products; centrifugal ventilator; slurry pumps, desulfurization pumps, and other industrial pumps; feeder, splitter valves, and other pneumatic conveying equipment; electrical equipment, such as research and development, production and sales of products.
In addition, the company also undertakes the design, installation and commissioning, after-sales service and water treatment operation service of pneumatic conveying complete set system, MVR evaporation, concentration and crystallization technology and complete set system, environmental protection water treatment complete set system and other engineering projects.
Our talent team features engineering and technology researchers enjoying the State Council's special allowances, provincial and municipal government allowances, and doctoral graduates introduced via the Jinan City "5150" project. We have set up a dedicated "postgraduate workstation", and hired more than 10 domestic and foreign experts to lead technical innovation work.
In recent years, the company has secured a number of proprietary technologies such as countercurrent cooling, fan noise reduction, fan anti-sticky wear, two-stage tandem, fan intelligence, special sealing, grease lubrication, twisted-leaf impeller design, etc. It has been authorized with 69 patents, among which 5 are invention patents, and has been granted with 2 copyrights.
The company is a third-level enterprise for safety production standardization, passed ISO9001 quality system certification, ISO14001 environmental management system certification, ISO50001 energy management system certification, ISO 10012 measurement management system certification, occupational health management system, and the relevant products have passed the Safety Mark for Mining Products, CE certification, energy-saving product certification, and national mandatory product certification (3C).
We boast strong technological research and development strength, advanced processing and testing equipment, design, scientific research, development, and testing capacities at the leading level in the machinery industry. Our modern design centers utilize PLM system for product life cycle management, CAM for computer-aided manufacturing, computer-aided process design CAPP, CNC technology CNC, and computer-aided testing CAT to guarantee precision manufacturing tolerances, shortening design cycles, and ensuring product reliability in the field.
Corporate culture is the soul of the development of a large enterprise and a reflection of the management level of an enterprise. The successful construction of a corporate culture shows that it is successful in management and the greater the development potential of the enterprise. Zhanggu Company is to fully respect the value of people, pay attention to the individual spirit of each employee, create potential and ownership responsibility, form a strong sense of value identity and great cohesion within the enterprise, stimulate the enthusiasm of employees, and implement through the system.
Everyone in ZhangGu Company has the spirit and attitude of not accepting defeat and fighting for the first. In recent years, ZhangGu Company has been very successful in the construction of the atmosphere, eliminating possible loopholes in the work, and at the same time respecting knowledge and paying attention to talents as a strategic policy for the sustainable and stable development of the enterprise.
Our design team provides complete 3D drawings within 24 hours of receiving parameters. Customers can send us drafts, layouts or reference pictures, and our technical design team will develop detailed CAD models for customer confirmation before production begins.
Detailed engineering insights for purchasing managers, mechanical engineers, and contractors in South America.
Yes. Paraguay operates on a 50Hz electrical grid with voltages typically at 220V (single phase) and 380V (three phase). All submersible pumps and Roots blowers we export to Paraguay are custom-configured with high-efficiency 380V/50Hz electric motors. Additionally, to withstand hot ambient climates in regions like Chaco, the motor windings utilize Class F or Class H insulation with thermal overload protection guards.
Traditional horizontal pumps require complex priming systems, suction pipes, and are prone to cavitation. The ZJQ submerged pump series operates completely submerged in the fluid. It is equipped with an integrated bottom agitator impeller that mechanical breaks up and re-suspends settled sand, silt, and clay solids, allowing them to be pumped efficiently without suction blockage. This drastically reduces the downtime and footprint of river dredging vessels.
Our ceramic slurry pumps feature structural silicon carbide (SiC) liners and impellers. Silicon carbide possesses a hardness second only to diamond, offering exceptional wear resistance against sharp, abrasive particles like quartz and silica sands. In abrasive mining sumps, ceramic slurry pumps outlast traditional high-chrome alloys by up to 3 to 4 times, delivering substantial long-term maintenance savings.
Absolutely. We specialize in design layout customization for municipal projects. Whether you require oil-free air supply from our SSR series Roots blowers or high-efficiency energy aeration from our Air Foil Bearing Turbo Blowers, our engineering team can adapt flange sizes, sound enclosures, control panels (supporting Modbus/PLC networks), and direct-drive configurations to match local station footprints.
Standard model pumps and Roots blowers are manufactured and tested within 20-30 days. Custom configurations may take up to 45 days. Shipments are typically routed from Qingdao Port to the Port of Asunción or Port of Villeta via transit hubs (such as Buenos Aires or Montevideo) using international freight carriers, taking approximately 40 to 50 days in transit.
High-efficiency, low-noise, and oil-free blower systems engineered for reliable industrial gas and air handling.
Zhangqiu
