To assemble bench press, household fitness equipment, barbell set, squat frame, multifunctional weight-lifting bed and fitness frame, it is necessary to prepare the tools and parts needed for assembly, and assemble them according to the following steps:

1. Assemble the base according to the instructions, and loosen all the adjustment screws at the four corners for subsequent adjustment.

2. Install the rod, insert the rod into the groove on the base, and tighten the screw.

3. Install the support column and upright post, install the support column and upright post on the base and crossbar, adjust the height as required, and then tighten the screws.

4. Install the crossbar, insert the crossbar into the slot on the column, adjust the height as needed, and then tighten the screws.

5. Install the bracket, insert the bracket into the slot on the crossbar, and then tighten the screw.

6. Install the dumbbell rack, insert the dumbbell rack into the slot on the bracket, adjust the height as needed, and then tighten the screws.

7. Install barbell racks and other accessories according to the instructions.