What are the dimensions of the rubber joint in the world.

Common rubber joint in the international market has the mark, the mark, date mark and so on, so the rubber joint if you use the same size in the same place?
The world's leading producer of rubber joint are mainly, such as the United States, Japan, Germany, China rubber joint products are claiming system in these countries, including Japan and China are close to, so the installation of the rubber joint length is also different, generally in inches in the United States, Germany and Japan, and China is an unit with ISO standard mm.Among various kinds of rubber joint length, chinese-made general according to different diameter of the installation is not the same, the length of the America, the rubber joint is 130 mm and 150 mm and 200 mm in length, Germany rubber joint product length is the same and the United States, more than for a single sphere rubber joint length.Domestic general double rubber ball joint is 225 mm, 325 mm, 400 mm and 550 mm length of several kinds of specifications.