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Mau Quan International Company Ltd.

A trusted supplier of construction machinery and hydraulic solutions for major domestic and international infrastructure projects, providing one-stop services from R&D, design, and manufacturing to maintenance and after-sales support.

Hydraulic Control Systems Heavy-Duty Machinery Construction Equipment Customized Solutions

Company Profile

Infrastructure Distribution Customization After-Sales
  • Products & Services: Construction machinery, hydraulic control systems, heavy-duty equipment, hardware tools, and components.
  • End-to-End Process: Standardized workflows across R&D, design, manufacturing, maintenance, and after-sales support to ensure reliability and shorter lead times.
  • Technology Integration: Continuous adoption of advanced technologies to enhance safety, efficiency, and durability for demanding environments.
  • Cost Effectiveness: Deliver high-performance equipment with optimized total cost of ownership.
  • Project Support: Application selection, on-site technical assistance, training, and spare parts planning to keep projects on schedule.
  • Custom Solutions: Tailor-made designs meeting specific operating conditions and compliance requirements.
We stand by professionalism, innovation, and reliability—ensuring timely support and comprehensive after-sales service throughout your project lifecycle.

Capabilities

  • Hydraulic Cylinders
    • Solid Type: 0.1 ton to 2500 tons, including load return, threaded lock nut, and spring return types; available in single-acting and double-acting designs. Stroke lengths up to 6000 mm, cylinder bores up to 1500 mm. Suitable for heavy-duty and long-stroke applications.
    • Hollow Type: 10 tons to 2000 tons, load return and spring return types, single-acting and double-acting models, widely used in prestressing, bridge tensioning, bolt removal, and other specialized operations.
  • Hydraulic Pumps
    • Power Sources: Electric (single-phase / three-phase), air-driven, gasoline engine-driven, and manual types. Various high- and low-pressure options available.
    • Control Options: Manual valves, solenoid valves, and PLC systems, offering flexibility and automation.
    • Flow Configurations: Single-speed and two-speed designs, balancing high efficiency with precision control.
  • Hydraulic Components
    • Pressure gauges, hoses, quick couplers, pipe fittings, seamless tubes, valve assemblies, and other high- and low-pressure components, ensuring system durability and safety.
    • Customizable packages to provide a complete hydraulic system solution tailored to client requirements.

Manufactured by our company are made by the following process :

Preload Jack Manufacturing Process

  • Requirement Confirmation: Based on customer specifications, we provide actual dimension drawings and load data, then discuss with the customer to meet their requirements. If complete drawings and specs are provided by the customer, this step can be skipped.
  • Raw Material Procurement: Select steel material JIS G4105 SCM440 according to design specifications for preload jacks.
  • Deep Hole Machining: Drill deep holes on solid raw material to ensure internal structural accuracy.
  • Rough Machining: Process parts to ±2~4mm tolerance, then perform heat treatment to improve hardness and toughness, extending product life.
  • Brazing: Acetylene brazing is used (highest cost but best effect); alternatives include silver brazing and CO2 brazing.
  • Precision Machining: Includes drilling, tapping, and lathe operations to ensure product accuracy.
  • Boring & Grinding: Precision inner bore processing for optimal piston-to-cylinder fit.
  • Electroplating: Hard chrome plating on pistons and inner cylinders to improve wear resistance and durability.
  • Pre-Assembly Inspection: Verify product number and parts accuracy before assembly, including seal installation.
  • Testing: Conduct full performance testing after assembly to ensure the jack meets design standards.
We ensure every preload jack is safe and reliable through precision manufacturing and strict quality control, meeting customer and project requirements.

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