Company Overview

Decades of Excellence in Water Infrastructure Solutions

Established in 1968, YUNG YU is a pioneer in Taiwan’s flexible expansion joint industry with over 55 years of manufacturing experience. Headquartered in Tainan, Taiwan, the company operates a 5,000 m² facility dedicated to producing high-quality water supply equipment, valves, and patented pipe joints.
YUNG YU has played a key role in national water infrastructure projects and serves clients across Southeast Asia, the United States, Canada, and beyond.
With multiple international patents and award-winning innovations, YUNG YU is recognized for its commitment to quality, reliability, and long-term partnerships.

Brand Video

Yung Yu Joint Special

Product Video

Yung Yu Joint Special

Flexible Expansion Joint

Seismic-Resistant Design
Built with durable ductile iron. Designed to handle land shifts and quakes, protecting vital pipelines.

Globally Recognized
Award-winning and certified, used in multiple countries.

Highly Customizable
Each product can be customized to meet diverse applications, standards, and regulations in different countries.

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Dynamic Force Balanced Pipe

Innovative & Niche
YUNG YU’s patented design creates a strong market edge in the niche field of flexible expansion joints.

Urban-Ready
Eliminates the need for thrust blocks, lowering costs and saving space in dense infrastructure projects.

Built-In Pressure Balance
Its air chamber design mitigates thrust and water hammer, offering a safer, all-in-one pipeline solution.

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Project References

YUNG YU products have been applied in major infrastructure projects worldwide, demonstrating both technical expertise and trusted quality.

Key Projects
● Hong Kong International Airport – Three Runway System and Terminal
● Macau Fourth Bridge
● Hong Kong–Zhuhai–Macao Bridge
● Tung Chung Area 99 & 100, Hong Kong
● Taiwan High Speed Rail
● Tainan Science Park
● Hsinchu Science and Industrial Park
● Kaohsiung Water Supply Plant – 3,200mm Flexible Expansion Joint

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Trusted Certifications for Quality Assurance

US Patent
FM Certificate
ISO Certificate2024-2025
IENA 93

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