In August 2020, after passing the rigorous evaluation and selection process of the investor and general contractor, Chau Au Nam Concrete Structure Joint Stock Company (AMACCAO) was selected as the sole contractor to produce and supply precast tunnel lining panels (segments) for 4km of tunnels on the Nhon - Hanoi Railway Station Metro Line, from station S9 (Kim Ma) to station S12 (Hanoi Railway Station).
According to the business representative, the event marked an important milestone, affirming the capacity and position of AMACCAO Group in general, and Chau Au Nam Company in particular, in the role of supplying construction materials for a project of special significance to the capital Hanoi as well as to the country.

Mr. Salvatore La Valle, a leading tunnel expert, has 32 years of experience in the field of international tunnel construction projects (Photo: AMACCAO).
International standard capacity conquers difficult general contractors
Hyundai - Ghella (HGU) joint venture is the contractor for package CP03 of the Nhon - Hanoi Railway Station metro project. These are two leading names in the field of urban transport infrastructure construction, especially underground metro projects.
Both Hyundai and Ghella have extensive international experience, having participated in the construction of many metro lines in developed countries such as Italy, France, Latin American countries, Indonesia, and recently projects in the US and Canada. The HGU joint venture is also known for its strict technical standards and stringent requirements in all stages from construction materials to quality control.
Mr. Salvatore La Valle - Head of TBM Engineering Team, HGU representative said that the metro tunnel is designed to last at least 100 years, therefore, every small detail in the tunnel lining is important. In particular, the tunnel segments are the key components of this project, with the task of bearing the load for the entire tunnel and ensuring safe tunnel excavation.

Concrete tunnel lining panels produced by AMACCAO are brought inside the structure via rails (Photo: Ngoc Tan).
He affirmed that the lifespan of tunnel lining panels depends on precise design, high-quality materials and strict quality control. This has caused the general contractor to face many difficulties in choosing a supplier of precast tunnel lining panels due to the very strict technical requirements, based on European and international evaluation standards, while there are few units in Vietnam that can ensure the proposed quality and technical criteria.
"One of the reasons we chose AMACCAO was their commitment to product quality. AMACCAO has invested in a modern automated production system to ensure high precision for tunnel lining panels. They are also willing to invest in factories, invest in production lines, accept quick delivery and maintain good material quality and production standards," said Mr. Salvatore La Valle.
With experience working in many countries, he assessed that AMACCAO's capacity is on par with international partners, contributing to demonstrating that the level of the Vietnamese concrete industry is approaching global standards.

As a supervisory consultant for the Hanoi Metro project, Mr. Ivan Conihan - representative of SYSTRA, was impressed with AMACCAO's professional working spirit, open-mindedness, continuous learning and willingness to invest in technology.
"AMACCAO has strictly controlled the materials, temperature, even the type of water used to make concrete, then to the production and curing process to ensure the product is properly cured and carefully stored. Thanks to that, the products delivered to the project are all of high quality. As a supervisor, we are very satisfied with all the products that AMACCAO has provided. Personally, I think AMACCAO has done an excellent job," Mr. Ivan Conihan emphasized.

Mr. Ivan Conihan, Supervision Consultant of Hanoi Metro Project (orange shirt), highly appreciated the "Made in Vietnam" tunnel lining products produced by AMACCAO (Photo: AMACCAO).
Mr. Ivan Conihan recalled the time in September 2024, when Typhoon Yagi swept through Hanoi, the road from the underground station to the AMACCAO factory was deeply flooded, trees were falling everywhere but the project progress could not be delayed.
At this time, AMACCAO's leadership coordinated with local authorities, Hanoi Urban Railway Management Board, contractors and supervision consultants to "weather the storm and wind", transporting tunnel lining panels right in the middle of this difficult time, helping the project not to be interrupted.
"We were impressed with their sense of responsibility in their work. Even when the storm was still going on, the tunnel drilling continued underground because it was safe there, but the risk of missing tunnel linings was real. AMACCAO's dedication and determination helped us avoid this risk," said Mr. Ivan Conihan.
Ready for the era of growth
Currently, the Government and sectors are promoting investment in the transport infrastructure system, with the policy of focusing on investing in many key national projects, the goal of bringing Vietnam to reach higher, further, and deeply integrating into the modernization era is increasingly clear.
In line with the country's great goals, AMACCAO Group is always a pioneer in proactive thinking, progressive spirit, promoting investment in research, mastering the production process of essential construction materials - indispensable materials for modern infrastructure, contributing to creating the country's self-reliance.
The Group's representative said: "We do not hesitate to invest tens of millions of USD in building and expanding the factory, as well as innovating technology to make a breakthrough and be ready to grow with the country."

That is also the reason why for many years, AMACCAO Group has played the role of a supplier of high-quality construction materials such as culverts, piles, prefabricated concrete components, tunnel lining panels, water industry materials, electrical industry materials, electric poles and lighting equipment, fire doors and equipment, copper threaded valves and faucets... for a series of key national projects such as Long Thanh International Airport, Noi Bai International Airport, Dien Bien Airport, Van Don Airport, Nhon - Hanoi Railway Station metro line, North - South expressway...
With experience in implementing a series of tunnel projects worldwide, AMACCAO is assessed by Mr. Salvatore La Valle to be able to meet the requirements of key projects with technical and special material requirements in the future on a large scale, especially in a country with strong infrastructure development like Vietnam.
"In this project, the prefabricated tunnel is one of the complex precast concrete products. Up to now, AMACCAO has done very well. Therefore, I believe that AMACCAO can carry out other complex precast components such as bridge girders, sleepers, prefabricated stations or other parts of the railway and key transport infrastructure projects in Vietnam in the future," said Mr. Salvatore La Valle.
Europe South - World of precast concrete (AMACCAO brand)
Website: https://betongchauaunam.com or https://amaccaopile.com.vn/
Hotline: 0968 4444 61
Source: https://dantri.com.vn/kinh-doanh/chuyen-gia-nuoc-ngoai-nang-luc-cua-amaccao-sanh-ngang-voi-cac-doi-tac-quoc-te-20250523120054219.htm
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