Mastery of Tianjin Steel Trade Co., Ltd. specializes in the supply of various types of spiral pipe, pipe, seamless tube spiral, reasonable price and stock. Spiral steel pipe and steel various steel theoretical formula formula 1, round weight per m = 0.00617 × diameter × diameter spiral pipe weight per meter = diameter - thickness * thickness * .024662, the steel weight per m = 0.00786 × edge width × edge width of 3, hexagonal weight per m = 0.0068 × edge-to-edge diameter of 4 × diameter, octagonal steel weight per m = 0.0065 × diameter × diameter of 5, rebar weight per m = 0.00617 × diameter × diameter of 6, etc. side angle weight per m = side width × edge thickness × 0.0157, flat weight per m = 0.00785 × thickness × width 8, seamless weight per m = 0.02466 × thickness × (OD - Wall Thickness) 9, welded steel 10 per m weight = seamless, steel weight per m = 7.85 × thickness 11, Brass: weight per meter = 0.02670 * thickness * (OD - Wall Thickness) 12, copper: weight per meter = 0.02796 * thickness * (OD - Wall Thickness) 13, aluminum checkered plate: weight per square meter thickness = 2.96 * 14, the proportion of non-ferrous metals: copper plate yellow copper 8.5 8.9 7.2 zinc plates stereotype 11.3715, calculated nonferrous metal plate The formula is: = proportion of weight per square meter * thickness square tube: weight per meter = (side length + side length) × 2 × thickness × 0.00785 equilateral angle steel weight per meter = 0.00785 × edge thickness (long side short side width + width - edge thickness) beam weight per meter = 0.00785 × waist thick [high + f (leg width - waist thick)] channel weight per meter = 0.00785 × waist thick [high + e (leg width - waist thick) ] Tianjin Tongda Steel Union Co., Ltd. specializes in the supply of various types of spiral pipe, pipe, seamless tube galvanized spiral, reasonable price and stock. How to increase the stability of small and medium sized spiral steel pipe, wire rod, rebar, medium diameter steel pipe, steel wire and wire rope spiral pipe plant in Tianjin, the material in a well-ventilated storage shed, but the thatch must underlay. Some small steel, sheet, strip, silicon, or thin-walled steel pipes of small diameter, a variety of cold-rolled, cold-drawn steel and high prices, corrosive metal products, can be stored for storage. Metal spiral | Tongda Steel Union (certified) | Hubei spiral from the Tianjin Steel Trade Co., Ltd. Mastery. Mastery of Tianjin Steel Trade Co., Ltd. (www.tjtdgl.com) (www.tdglgt.com) Shandong Liaocheng, steel leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. Mastery Steel Union leaders in the staff warmly welcome all inquiries negotiations to create accessible VAI better future.