Mastery of Tianjin Steel Trade Co., Ltd. specializes in the supply of various types of spiral pipe, pipe, seamless tube, 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, reasonable price and stock. Spiral characteristics: Longitudinal production process is simple, high efficiency, low cost, rapid development. Spiral Welded Longitudinal generally higher than the high dn500 spiral, can narrow the billet production of large diameter pipe, you can also use the same width of the billet production of different pipe diameters. However, compared with the straight seam steel spiral tube of the same length, weld length of 30 to 100% galvanized spiral, and lower production rate. Therefore, the smaller diameter pipe were powered by straight seam welded, large diameter spiral welded pipe for the most part. Spiral price spiral _ _ Jiangsu Tongda provided by the Tianjin Steel Union Steel Union Co., Ltd. Mastery. Mastery of Tianjin Steel Trade Co., Ltd. (www.tjtdgl.com) (www.tdglgt.com) strong, credible, Liaocheng in Shandong steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving access innovative ideas will lead VAI into the brilliant and you work for a better future!