边长
(mm) 壁厚 (mm) 壁厚 (mm)
A t A B t
25 1.2 0.867 50 25 1.2 1.338
25 1.5 1.061 50 25 1.5 1.650
25 1.75 1.215 50 30 2.5 2.817
25 2.0 1.363 50 30 3.0 3.303
30 2.5 2.032 50 30 4.0 4.198
30 3.0 2.361 60 30 2.5 3.209
40 2.5 2.817 60 30 3.0 3.774
40 3.0 3.303 60 30 4.0 4.826
40 4.0 4.198 60 40 2.5 3.602
50 2.5 3.602 60 40 3.0 4.245
50 3.0 4.245 60 40 4.0 4.454
50 4.0 5.454 70 50 3.0 5.187
60 2.5 4.387 70 5