免费的三片播放器_夜夜爽夜夜叫夜夜高潮漏水_好吊妞视频这里有精品_女女女女女裸体处开bbb_日韩视频中文字幕精品偷拍

The demand of different tire tire meridian trend

Column:Industry information Time:2012-12-08
In Europe, Japan, North America and other regions, the tire meridian rate before 2000 basically reached 99%. After 1990, China, Brazil and other countries also developed rapidly.

In Europe, Japan, North America and other regions, the tire meridian rate before 2000 basically reached 99%. After 1990, China, Brazil and other countries also developed rapidly. China's development speed is very fast, at present, the tire meridian rate reached more than 70%, in the next three years, China's tire meridian rate will be slightly improved, but the growth rate slowed down. India and Russia are somewhat slower, but overall meridional rates are improving.

Tyre labelling laws have been in force in Europe since November 1, 2012, and are also in the works in Japan and South Korea. In fact, Japan already started voluntary tire labeling in 2010; South Korea since December 2012, began to mandatory tire labeling, the United States will also be on the tire resistance to wet, rolling resistance and wear resistance requirements. Green, environmental protection has become the development trend of the world tire, tire production technology upgrade has become an inevitable trend.

● Europe and North America's development trend of heavy tire

The ultra-wide tire has become the development trend of the heavy tire, which has strict use specifications in the process of use in Europe and America.

First, the maximum height of the vehicle is 4 meters; Second, it requires more engine horsepower than a normal car, larger forklift disc and rim diameter; At the same time, for the protection of the road surface, the maximum inflation pressure of the tire must be limited to 9bar.

China has many technical and policy restrictions on the use of ultra-wide tyres, so it is not suitable for large-scale promotion at present.

● The demand for steel cord for load tires

In China's meridian load tires, "overload" and "long-distance" two directions accounted for 90% of the total sales of load tires. In the process of driving, overload and overpressure simultaneously increase the mean and amplitude of the tire cord stress, which aggravates the wear and corrosion of the steel cord, and shortens the fatigue life of the tire cord. Therefore, improving the corrosion resistance of the cord can effectively improve the tire life.

For overloaded tires, it is necessary to increase the strength of tire cord with greater strength, and it is necessary to improve the performance of cord penetration to reduce the corrosion of cord. For long distance tires, higher strength cord is needed to reduce the weight of cord, and the optimization of cord structure means to reduce cord wear and prolong the life of tire body cord.

四虎影视久久久免费观看| 男女后式激烈动态图片| 亚洲av无码成人精品国产| 欧美精品中文字幕亚洲专区| 人妻体内射精一区二区三四| 亚洲精品无码午夜福利中文字幕| 综合 欧美 亚洲日本| 久热在线这里只有精品| 久久婷婷综合色丁香五月| 青青小草av一区二区三区| 欧美亚洲国产一区二区三区| 又粗又大又硬毛片免费看| 国产av无码专区亚洲精品| 精品国产乱码久久久久乱码| 国产69精品久久久久99尤物| 高清无码一区二区在线观看吞精| 国产电影无码午夜在线播放| 大地资源中文第二页日本| 日韩精品人妻中文字幕有码| 激情国产一区二区三区四区小说| 亚洲女女女同性video| 一区二区三区乱码在线 | 欧洲| 伊人久久大香线蕉无码| 97国产精东麻豆人妻电影| 免费a级毛片在线看| 麻豆精品偷拍人妻在线网址| 日本久久高清一区二区三区毛片| 一本之道高清无码视频| 国产专区免费av无码| 亚洲精品无码精品mv在线观看| 午夜一区一品日本| 女性女同性aⅴ免费观女性恋| 国产人妖乱国产精品人妖| 国产无遮挡又黄又爽在线观看| 少妇无码一区二区三区| 久久午夜福利电影| 亚洲丁香五月激情综合| 久久精品国产亚洲av瑜伽| 亚洲精华国产精华精华液网站| 亚洲人成在线播放网站| 午夜理论片yy44880影院|