Three-Link Chain for Coal Transfer Grade B Size(d) Pitch(p) Min. Inside Width(a) Max. Outside Width(b) Curve Radius(r) Test Load Max. Elongation at Test Load Min. Breaking Load Min. Total Elongation at Fracture 3 Links(Weight) mm mm mm mm mm kn kn kn 22 105 40 87 41 70 2 370 15 2.9 26 118 46 102 48 100 2 520 15 4.6 28 120 48 108 51 110 2 610 15 6.7 30 120 48 112 53 120 2 670 15 7.8 30 130 55 119 56.5 120 2 670 15 6.9 Three-Link Chain for Coal Transfer Grade C Size(d) Pitch(p) Min. Inside Width(a) Max. Outside Width(b) Curve Radius(r) Test Load Max. Elongation at Test Load Min. Breaking Load Min. Total Elongation at Fracture 3 Links(Weight) mm mm mm mm mm kn kn kn 22 105 40 87 41 135 2 530 15 2.9 26 118 46 102 48 190 2 740 15 4.6 28 120 48 108 51 220 2 860 15 6.7 30 120 48 112 53 250 2 990 15 7.8 30 130 55 119 56.5 250 2 990 15 6.9