Concrete Box Culvert Manufacturing Process

The concrete box culverts are widely used in utility tunnel. How are the box culverts made?  The concrete box culvert mold is the main facilities during the manufacturing process.

Wet-casting and dry-casting are the main methods have been adopted worldwide at present.

We-cast concrete box culvert mold-Horizontal type.

The wet-cast concrete box culvert steel mold uses the inner mold stick bar to open and shut, it's easy to operate and de-mold.


We-cast concrete box culvert mold-Vertical type.

This method precast the box culvert vertically. The mold is designed to collapsed type,

with the connection of steel rod, it's easy to assemble and remove.


The out mold runs on the rails, which is very easy to open and shut.

Dry-cast Concrete Box Culvert Mold

Using vibration machine to produce concrete box culvert become more and more common, the same vibration machine can be used to make circular pipes and rectangular box culvert.

Another method to make box culvert is vibration table. The vibration table and dry cast concrete box culvert mold is suitable to make small concrete products.

Comparision of different concrete box culvert mold

  1.  wet cast concrete box culvert mold horizontal type is very suitable to make small box culvert, the mold is easy to assemble and open, the finished culvert has the feature of the nice surface, and small enough to easily transport.
  2. wet cast concrete box culvert mold vertical type can make concrete box culvert with different joint, to meet different requirement of varies projects; this mold is ordinary to make large concrete box culvert.
  3. vibration concrete box culvert mold use the half-dry concrete as aggregate, the finished product has high density and strength, and the mold removes instantly after production. This is very perfect for mass production and urgent civil projects.

Concrete box culvert manufacturing process

  1. Steel bar frame welding
  2. Lifting the steel frame to the box culvert mold.

3. Assembling the mold

4. Filling Concrete

5. Curing process

6. Demoulding


7. Finished Product


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