1.     1900 x 1000 x 700 mm cast iron T-slotted cube;

2.     Close-grained, high-strength grey cast iron HT-250 grade;

3.     13 T-Slots on top surface along direction of 1000 mm dimension, each T-slot size 22H12 (Unit: mm), Distance between two adjacent T-slots is 150 mm;

4.     Surface flatness accuracy 0.08 mm/1900 mm;

5.     Twice annealing treatments with temperature in range from 600℃ to 700℃;

6.     Net Weight of each bolster plate is 2100 KG.