Depending on the metal elements containing aluminum, aluminum can be divided into nine categories, that is, can be divided into nine series, following a step by step outline the 1000 Series II, 2000 series aluminum three 3000 series aluminum representatives for 3003 3003 3A21 the Lord. 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. . Determine the assembly gap spacing and positioning welding welding process professional production of thick aluminum, aluminum alloy thermal expansion, resulting in reduction of the weld groove gap, gap before welding assembly if left too little in thick aluminum prices, the welding process will caused by two plates overlap groove, the increased weld plate surface roughness and the deformation; instead of thick aluminum, assembly gap is too large, the difficulty in thick aluminum welding purposes, and may burn tacking appropriate spacing. to ensure the desired positioning welding gap, therefore, choose the right tack welding assembly space and distance, is an effective measure to reduce the distortion. According to experience, different thickness on the seams of the assembly process more reasonable parameters thick aluminum use cis Aluminum (certified), the thick aluminum rolls provided by Jinan Aluminum Limited. 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.