Each of the square and rectangular hollow sections shall be marked with the following information. a)manufacturer's name b)specification designation c)grade letter d)dimension e)heat number. Inspection and Testing. ASTM A500 is subject to specific inspection and testing. The test method shall be in accordance with ASTM A 370, ASTM A 751.
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MetalsDepot® - Buy Aluminum Square Tube OnlineAluminum Square Tube, is an extruded aluminum that is widely used for all types of fabrication projects where lightweight and corrosion resistance is a primary concern - frame work, support columns, gates, fencing, handrails, etc. Aluminum Square Tube has square corners inside and outside, with no weld seam.Available in both 6061-T6 and 6063-T52, with the 6063 square tube being more formable
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The 75x75 tube square pipe you can find on the site are generally built using hot-dipped technology to prevent rusting and weakening of the structural elements. With seamless welding quality, these 75x75 tube square pipe are annealed with nitrogen protection and are polished with utter professionalism. These products are made of robust materials such as carbon steel, stainless steel, galvanized surface