Mandrel airbag: It can substitute the wooden or steel mandrel used for pouring the hollow of large reinforced concrete structure.
Mandrel airbag: It can substitute the wooden or steel mandrel used for pouring the hollow of large reinforced concrete structure.
Mandrel airbag: It can substitute the wooden or steel mandrel used for pouring the hollow of large reinforced concrete structure.
Mandrel airbag: It can substitute the wooden or steel mandrel used for pouring the hollow of large reinforced concrete structure.