Although aluminum and aluminum welding process will encounter many difficulties factor, but other materials such as copper compared to aluminum and aluminum also has some of the unparalleled advantage. So in the aviation, aerospace, automotive, machinery, electronics, chemicals, light industry, railways, etc., aluminum and aluminum alloy welding products are gaining a wide range of applications, our vast land resources are very rich in aluminum, and the cost of the development and utilization of the more low, aluminum and aluminum alloy welding in our country is very promising. e) face the wind or rain erosion surface to prevent rainwater seeps through the filling material and the wall between the windows and doors, with due consideration sealing baffles or other waterproof coating, increasing impermeability; f) sash junction to leave dispensing slot width 5-8mm 7075 tubes, sealing materials embedded note, you should pay attention to remove floating dust, mortar, so that the sealing material and window frames, wall firmly bonded. Also check whether the continuous sealing material, whether omissions, etc., especially if there is a transfer position angle pores exist; facades should be used for wall tiles above two sealed to avoid patchwork capillary water penetration; g) adjusting the pad ban remains in door frame, should be promptly removed after filling dense secondary aluminum manufacturer specializing in the production of 7075, reliable adhesion and matrix filling attention Shandong 7075 aluminum suppliers, in addition to clear the debris outside the matrix should be moist; h) should be lower than outdoor windowsill Jinan appropriate interior sill plates 20mm 7075 aluminum factory, and set sails slope, drainage flow, to avoid water penetration. Aluminum windows and facades have a certain distance, avoid direct rain erosion. i) doors and windows fittings, materials, specifications, connection methods should comply with local "aluminum doors technical regulations" requirement, timely and concrete or mortar seal anchor, to avoid leaving the sealing material moving cracks under wind loads. Professional production of 7075 aluminum manufacturers, rolls aluminum, aluminum is provided by Jinan Heshun 7075 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.