What is the WLL of a 1/2-inch Grade 70 tiedown?

Size (in diameter):
7 mm (1/4 in):
8 mm (5/16 in):
10 mm (3/8 in):
11 mm (7/16 in):
13 mm (1/2 in):
16 mm (5/8 in):
Chain Marks -
Grade 70 Transport:
1430 kg (3150 lb)
2130 kg (4700 lb)
2990 kg (6600 lb)
3970 kg (8750 lb)
5130 kg (11300 lb)
7170 kg (15800 lb)
Chain Marks -
7
70
700