Liaocheng Goldman Sachs Co., Ltd. is producing seamless steel pipe Rectangular pipe, large diameter square and rectangular tube, thick-walled Rectangular Pipe, galvanized seamless pipe, welded square tube sales, logistics in one of the square tube manufacturers. The formula square tube weight formula: 4 * thickness * (side length - wall thickness) * 0.00785 circular pipe weight formula: {(perimeter ÷ 3.14) - thickness} * thickness * 0.02466 Note: The above units kg / m square and rectangular tube price formula, wherein the thickness and side length in millimeters square and rectangular steel pipe prices, namely mm. Liaocheng Goldman Sachs Co., Ltd. is producing seamless steel pipe Rectangular pipe, large diameter square and rectangular tube, thick-walled Rectangular Pipe, galvanized seamless pipe, welded square tube sales, logistics in one of the square tube manufacturers. Rectangular pipes are mainly used for construction, glass walls, decorative doors and windows, steel, fence, machinery manufacturing, automobile manufacturing, electronics manufacturing, shipbuilding, container manufacturing, electricity, agricultural construction, agricultural greenhouses, bike racks, motorcycle frames, shelves , fitness equipment, leisure and travel goods, steel furniture, a variety of oil casing, tubing and line pipe, water, gas, sewage, air, heating and other fluid transport, fire fighting and stand, construction and other fields. Rectangular Pipe price formula, Goldman pipe for (certified), Rectangular Pipe Anshan prices provided by Goldman Sachs Pipe Co., Ltd. Liaocheng. Liaocheng Steel Pipe Co., Goldman Sachs (www.gg986.com) (www.16mn986.com) Shandong Liaocheng, steel leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Goldman Sachs steel for leadership with the staff warmly welcome all inquiries negotiations to create Goldman pipe for a better future.