i. Be familiar with the drawings and technical information of gantry crane before installation. Eliminate the inaccuracy and deformed parts resulted from transportation. Bridge Girder Launcher for Highway and RailwayIf found the reshaped mechanical parts, install it after correction.

ii. Check the corrosion and remove the rust and dirt. Repaint and assemble if necessary. Ensure rotating parts flexible, connecting parts solid and reliable.

iii. Avoid the wrest, curve and bump while carrying the crane. Pack the main girder with underlay but averting out of shape as lifting. Prohibit dragging objects on the ground or girder.

iv. Guarantee the storage location solid ground in case of deformed. If stocked outdoor, pay attention to anti-sun and antirust.