70*20 Galvanized Sheet Ducts for Prestressed Concrete
We produce metal corrugated duct in China. Our factory was founded in Tianjin China in 1994.
Model:flat, round
We produce metal corrugated duct in China. Our factory was founded in Tianjin China in 1994.
Model:flat, round
Chunpeng Corrugated Duct
Model:60mm*23mm
Chunpeng Corrugated Duct
Model:Post Tension Slab