Barter is the present and the future of international trade, especially for people who is starting in the import export business. Barter and more: Triangular operations.
The material of bowling pins
There are two sets of 20 ball pins in each fairway. The ball pins are mainly made of maple wood, which is processed by special processes such as drilling, bonding, grinding and spraying, and the surface is processed into a very smooth curve with plastic compounds.
Specification
(1) Weight: The weight of the ball is between 1.26-1.46 kg. In a set of 10 pins, the heaviest and lightest weights must not differ by more than 113.4 grams (4 ounces).
(2) Size: height 38.85 cm, thinnest part 4.6 cm, thickest part diameter 12.1 cm, thickest part circumference 38 cm, bottom diameter 6 cm.
(3) Center of gravity: The balance center of gravity of the pin should not be higher than about 12.38 cm and not lower than 18.52 cm.
(4) The bottom of the ball bottle is equipped with a reinforced plastic ring.
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