Unlike the existing expansion pipes, there is no leakage phenomenon caused by aging of the rubber packing and loosening of the compression bolt, which ensures that no defect occurs after the installation.

Because the bellows material is made of stainless steel, it generates no corrosion, which ensures the supply of clean water.

Because it is made of stainless steel, which is light and excellent in corrosion resistance, it can be buried without a separate manhole.

Because it can completely absorb axial expansionwithout leakage, despite displacement resulting from ground subsidence, the seismic design is possible.

Produced and molded by TIG welding, thebellows crest can withstand high pressure, ensuring no leakage.

Designed to receive a large amount of expansion, the number of expansion pipe installations can be reduced with the installation cost re0duction effect.