Although the use of solder to connect the aluminum and aluminum products, with only five or six years old, but in just a few decades, has developed a comprehensive aluminum and aluminum alloy welding technology. Development of welding technology makes welding of aluminum and aluminum alloys can be expanded up. Now not only mastered the heat strengthened high-strength aluminum alloy with various problems of hard welding and welding methods for aluminum and aluminum alloys increased. Now in addition to the traditional welding, resistance welding, brazing, pulsed argon (helium) arc. Chen polarity parameter forces square wave AC tungsten arc welding, plasma arc welding, vacuum electron beam welding, vacuum brazing machine air protection and diffusion bonding and so can be easily welded aluminum and aluminum alloys. In most cases, aluminum pipe, welding other materials using conventional equipment and processes with supply aluminum square tube manufacturers, aluminum and aluminum alloys can be welded, and sometimes require special equipment and technology. Aluminum welding technology technical difficulties low melting point of aluminum, thermal conductivity, high aluminum square tube Which is good, heat capacity, thermal expansion coefficient. Aluminum and oxygen has a great affinity, which may cause the oxide inclusions in the weld. ③ aluminum in the liquid can absorb large amounts of hydrogen supply manufacturers of aluminum square tube, so aluminum welding easy to generate pores. ④ aluminum and its alloys heating temperature reaches melting point, from a solid into a liquid when the process is carried out quickly, and no color change, it will be difficult to square tube aluminum welding × Which is good for, rolls aluminum, aluminum square tube by Jinan Heshun Aluminium 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.