Seamless square tube | square tubes | Donghui supplies

 Seamless square tube introduce the basics of seamless square tube square tube factory, is four corners of steel, cold drawn seamless steel tubes extruded from rectangular steel pipe, seamless pipe and welded square tube square essentially different. Steel hollow section, a lot of fluids used for pipeline transportation. The formula to calculate the weight of the pipe editing Weight: 4 * thickness * (side length - wall thickness) * 0.00785 rectangular tube weight formula :( /3.14- perimeter wall thickness) * thickness * 0.02466 square tube tube becomes formulas :( side + side length) × 2 ÷ 3.14 square tubes such as 40 * 40 * 5 into the pipe diameter is big (40 + 40) × 2 ÷ 3.14 = 50.9 should be used to change the tube 51 * 5 This year's production is expected to pull seamless square tube could reach 900 million tons in 2015 if China's iron ore imports to shore average price of $ 80 / ton, the estimated annual imports of more than 1 billion tons of iron ore, up 10 again %; if in 2015 the average price of China's iron ore imports to shore fell to $ 70 / ton below the horizontal pipe polishing machine, the annual volume of imported iron ore is likely to reach or nearly 12 million tons, an increase of 3 percent. According to Reuters, square tube, Rio Tinto chief executive Walsh (SamWalsh) in Melbourne, said yesterday that the company will not be Glencore acquisition, because no benefit for shareholders, regulators will not allow. Rio Tinto last August rejected Glencore's takeover offer, the Bank of rare large-scale seamless square tube decompression burden of $ 100 billion of foreign exchange reserves. And when the matter disclosed in October. Glencore is not excluded areas may initiate acquisitions again. According to British rule after April Glencore can commence operations. Seamless square tube | square tubes | Donghui materials provided by the Department of Materials Co., Ltd. Liaocheng East. Limited supplies Liaocheng Donghui (www.dhjmg.com) (www.dhwfggc.com) (www.dhwfgc.com) (www.dhjmgc.com) strong, credible, Liaocheng in Shandong steel industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Donghui supplies and you hand into the brilliant, for a better future!