Model Length (mm) Every time after the root number service load (KN ) Anisotropic angle( °) Nominal weight (kg) beams hinge portion Up&down Left&right DJB-600/470 600 1-2 470 170 7 ° 3 ° ã?? 18.86 DJB-800/420 800 1-2 420 170 7 ° 3 ° 22.88 DJB-1000/300 1000 1-2 300 170 7 ° 3 ° 26.90 DJB-1200/300 1200 1 300 170 7 ° 3 ° 30.92