Mastery of Tianjin Steel Trade Co., Ltd. is in production, sales, logistics in one large square tube manufacturers. Square tube rectangular tube specifications produced by the company with a full-size: 600 * 20 * 20 --- 600 square tube, 20 * 30 --- 400 * 800 rectangular tube thickness of 1.5mm --- 32mm square pipe plant, up to more than 2800 kinds of specifications; made of Q195, Q215, Q235, Q275, Q345,20 #, 45 #, square tube, galvanized pipe, seamless pipe, large diameter thick-walled square tube, Rectangular Pipe etc., and can produce diamond, triangular, pentagonal, hexagonal, fan and other special size, are also available according to customer drawings, dimensions tailored. The production line for the leading international and domestic initiative of the wave roll extrusion unit, which rejected the original small workshop mode of production speed slow cold drawn square and rectangular tube, no guarantee of quality, twist, bend crack, uneven thickness and is now widely volume applications of cold-formed unit, low accuracy, specifications single, small caliber, thin (15.75mm) and other defects. The unit is forming a straight one unit square tube, the entire computer monitor, without manual pull a hard pull 16mn square tube, fully automated unit can guarantee square tube rectangular tube of a variety of mechanical and physical properties. Each line of more than 20 tons per hour production of large diameter pipe, the year after full production output of up to 15 tons. Mine fluid delivery welded pipe, standard number I GB / T14291-2000. Representative of material Q235A, grade B steel is mainly used for mine air pressure, drainage, gas discharge shaft with a straight seam welded square tube. Low pressure fluid with a large diameter welded pipe, standard number GB / T14980-1994. Representative material Q235AB level. Mainly used for conveying water, sewage, gas, air, steam heating and other low pressure fluids. Thick-walled square tube, around the steel association (certified), Jiangsu Tongda square tube from the Tianjin Steel Trade Co., Ltd.. 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.