Second, the ball Basketball basket, including the basket and the Nets.
1, the ring according to the following requirements:
(1) solid iron bars, diameter 0.45 m (45 cm), painted orange;
(2) the diameter of the circle of the minimum 0.017 m (17 mm), the largest 0.020 m (20 mm), the ring along the edge along with a small ring or similar things in order to hang the Nets;
(3) They should be firmly installed in the rebounds (see note below), the top of the ring to be horizontal, 3.05 meters from the floor, and the rebounds of the two sides of the same distance from the vertical; Note: We recommend: In the structural framework of the rebounds, so that the force on the ring will not be directly applied to the rebound.
(4) rebounding board from the rim along the nearest point is 0.15 meters (15 cm);
(5) can be used compression ring. They meet the following technical conditions:
A, they have to rebound with those who are not active in the same rebound characteristics. The constant pressure device ensures these characteristics and protects the rim and the backboard. The design and manufacture of the ring can ensure the safety of the players;
B, those with a force lock the ring, the furthest away from the circle circle at the top of the ring to apply static load of less than 105 kg, the constant pressure device must not be loose;
C, when the constant pressure device is opened, the ring down, with the original horizontal position of the angle shall not exceed 30 degrees;
D, when the constant pressure device is no longer open and loaded, the ring to return to their original position from the transport.
2, the Nets with white string formed, hanging on the ring; its structure to be able to make the ball through the basket when a temporary pause. Net length of not less than 0.40 m (40 cm), no longer than 0.45 m (45 cm)
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