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The special L carrier is the most effective equipment for transporting & installing bridge girder .especially for running through a tunnel .Normally ordinary launching gantry needs at least 3 days and nights to pass a tunnel,but for Special L carrier. Just needs 2 hours

The primary steps for Special L Carrier as followings:

1,transport the concrete girder to the site

2,connect the front transporter with the lower beam

3,Take the girder to the right position over and between the first two piers

4,advance the lower beam and put the girder down onto the piers.

Character for TL special L carrier

Steering with flexibility & steering modes in abundance

Structure compactness and lower height

No dismantling to pass a tunnel.

For more details see the video.