Depending on the metal elements containing aluminum, aluminum can be divided into nine categories Jinan color aluminum sales center, which is can be divided into nine series, following a step by step outline the 1000 Series II, 2000 series aluminum three 3000 series aluminum 3003 3003 3A21 main representative. Also known as rust-proof aluminum of 3000 series aluminum production process is more outstanding. 3000 series aluminum is made of manganese as the main ingredient. Content between 1.0-1.5. . The reason an aluminum coil cracks, due to the friction of the surface of the aluminum coil attached by Niagara stress, when attached to the surface of the metal tensile strength greater than the tensile stress will crack; 2, extrusion temperature is too high color aluminum, aluminum coil surface tensile strength decreased, cracks in the frictional force; 3, when squeezed too fast, the surface of the aluminum coil attached Gallas suffered increased stress cracks make profiles Jinan color aluminum sales center. cis Aluminum (certified), color aluminum supplied by Alcoa Ltd. Jinan rolls. Jinan Heshun Aluminum Co. (www.jnhsly.com) Shandong Jinan, aluminum products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Aluminum leadership in cis with the staff warmly welcome all inquiries negotiations to create a better future for aluminum rolls.