Bridge Building Steel Structure Galvanized Metal Corrugated Pipe for Construction
JNFLEX (CHANGZHOU) CO., LTD.90mm Pre-Stressed Galvanised Steel Corrugated Pipe for Post Tensioning
JNFLEX (CHANGZHOU) CO., LTD.70mm Post-Tensioning Galvanized Flat Duct for Pre-Stressed Concrete Bridge Construction
JNFLEX (CHANGZHOU) CO., LTD.70mm Smooth Type Flat Duct for Prestressed Buildings
JNFLEX (CHANGZHOU) CO., LTD.90mm Smooth Type Flat Duct for Prestressed Buildings
JNFLEX (CHANGZHOU) CO., LTD.70mm Precast Concrete Pre-Stressed Metal Corrugated Pipe
JNFLEX (CHANGZHOU) CO., LTD.90mm Precast Concrete Pre-Stressed Metal Corrugated Pipe
JNFLEX (CHANGZHOU) CO., LTD.70 90 Precast Concrete Pre-Stressed Metal Corrugated Pipe
JNFLEX (CHANGZHOU) CO., LTD.