With the development of technology. Umbrellas have changed, from the oil-paper umbrellas of the past to the wide variety of umbrellas now. With the changes in the umbrella surface, the umbrella ribs have also changed. In the past, most of the umbrella ribs were made of wood and bamboo. Later, iron ribs, steel ribs, aluminum alloy ribs (also called fiber ribs), electric ribs and resin appeared. Bones, and most forms use shrinking bones (bone-retracting umbrellas), which are light and convenient to carry. The steel frame is the strongest and most durable, not easy to break and has a long service life. The iron frame is hard, not easy to break, and has good wind resistance, but it will easily rust over time. The aluminum ribs, electric ribs, and resin ribs of the Bai Umbrella Net are relatively lightweight and portable, and are currently used more often in lightweight series of umbrellas. Its disadvantage is that it is easy to fold and has poor windproof performance.
Umbrellas generally have 6-8 ribs, and the most can reach 24 ribs, as long as they are used in straight umbrellas. Parasols generally have 6, 7 or 8 pieces. The more roots, the stronger it will be, but it will also be heavier. The most common ones we see are 8-bone iron bones and steel bones. 8-rib and 16-rib umbrellas are more commonly used in umbrellas and sun umbrellas, but in order to reduce costs, many sun umbrellas are now made with 7 ribs. 6- and 7-ribs are often used in ultra-light sunshade umbrellas. Most of the materials are aluminum alloy bone (fibrous bone) and resin bone. However, the price of aluminum alloy bone, fiber bone and resin bone is relatively high, so they are often used in high-end umbrellas. High-end umbrellas pay attention to style. When designing an umbrella, they will consider the shape of the umbrella and will not consider the number of ribs to reduce costs, so sunny or rainy umbrellas are better with more ribs. There is no need to consider the number of ribs for an ultra-light umbrella for sun protection. The quality of an umbrella depends not only on how many ribs it has, but also on what material it is made of. Moreover, the number of ribs cannot directly determine the quality of an umbrella. With one more rib, if you want to protect against the same wind, the quality of the ribs will probably increase a lot. Many umbrellas on the market cannot do this, so when buying an umbrella, you should not only look at the number of ribs, but also make a comprehensive judgment. Of course, if the number of umbrellas is large and the ribs are not easily folded, the safety factor of the umbrella will also increase.