12-0.888
14- 1.2 1
16- 1.58
18-2
20-2.47
22-2.98
25-3.85
28-4.83
32-6.3 1
Weight of 25 linear meters = 25 * 25 * 0.0017 = 3.85kg.
22 linear meter weight = 22 * 22 * 0.0017 = 2.98kg.
25 Weight of threaded parts = 3.85 * 9m * count/1000 (ton), with three decimal places reserved and rounded.
Another calculation method is rice weight = circular area * specific gravity of iron.