Square table, calculating formula of theoretical weight

Model        Theoretical weight (kg/m)              Model           Theoretical weight (kg/m)

20*20*1.2                    0.75                                            50*30*2.5                                 3.02
25*25*1.2                    0.94                                            50*30*3                                     3.6
40*40*2                       2.29                                            50*32*2                                      2.2
40*40*2.5                    3.02                                            50*35*2.5                                  3.32
40*40*4                       4.68                                            55*38*2                                      2.8
50*50*2.5                    3.81                                            60*40*2.5                                   3.81
50*50*3                       4.44                                            60*40*3                                      4.44
50*50*4                       5.74                                            60*40*4                                      5.74
60*60*2.5                    4.52                                            70*50*4                                      7.02
60*60*3                       5.38                                            80*60*3                                      7.09
60*60*4                       7.02                                            80*60*4                                      8.22
70*70*4                       8.22                                            80*60*5                                     10.25
70*70*5                      10.20                                           90*40*2.5                                   5.19
80*80*4                       9.96                                            90*60*5                                     10.47
80*80*6                      13.85                                          100*60*3                                     7.3
100*100*4                  11.65                                          100*60*4                                     9.16
100*100*8                  23 .00                                         100*60*5                                    11.53
120*120*4                  14.16                                          100*60*4.5                                 14.41
160*160*4.5               19.2                                             160*80*4.5                                15.84       
220*80*6                     27.1

The calculation formula of square wall thickness: 4* (length * thickness) *7.85

Among them, length and wall thick with millimeter as a unit, directly to the numerical is substituted into the above formula, that is the weight of per square meter in grams per.

Such as: 30x30x2.5 mm square, according to the above formula to calculate the weight per meter:
4x2.5x (30-2.5) x7.85=275x7.85=2158.75 grams, that is about 2.16 kg