We specialize in manufacturing critical hydraulic components for Controllable Pitch Propellers (CPP) used in modern ships. Our expertise in this niche area contributes significantly to the efficiency and maneuverability of marine vessels worldwide.

[Features]
● Type: Oil supply pipe
● Function: Enables hydraulic adjustment of propeller blade angles
● Structure: Precision-engineered pipe with welded guide fins and couplings, featuring internal thread machining
● Dimensions: Customizable length from 3m to 5m, with a minimum diameter of φ90
● Required Performance: High precision and high durability

[Our Advanced Manufacturing Process]
We employ a sophisticated manufacturing process to ensure the highest quality:
● Precision Machining: Utilizing our 10m CNC long bed lathe or 6m general-purpose long bed lathe for initial shaping
● Expert Welding: Carefully attaching guide fins and couplings to enhance structural integrity
● Proprietary Straightening: Employing our in-house developed straightening machine for perfect alignment
● Precision Threading: Performing internal thread machining at the end sections for seamless integration

[Technical Features]
● Long Component Expertise: Specialized in precision machining of extended components
● Advanced Welding Techniques: Ensuring strong and durable joints
● Innovative Straightening Technology: Utilizing proprietary methods for optimal component alignment
● Integrated Production System: Maintaining quality control throughout the entire manufacturing process

[Applications]
Our CPP hydraulic components find critical applications in various maritime systems such as:
● Core elements in hydraulic adjustment systems for controllable pitch propellers
● Integral parts of ship propulsion hydraulic systems
● Key components in steering systems for large ocean-going vessels


Nakagawa Inc. specializes in large-scale precision machining.
●Machining capabilities up to 14 meters in length
●Comprehensive services from material procurement to assembly
●Expertise in difficult-to-machine materials like duplex stainless steel and titanium
●Flexibility to handle small-lot production


Nakagawa Inc.
2024,Kurabemachi, Hakusan-shi, Ishikawa, Japan
Website: https://www.nakagawa-t.com