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Tianjin Rui Tong Steel Co., Ltd. is a large-scale steel manufacturer specializing in the production and operation of straight welded pipe, spiral welded pipe, precision pipe, galvanized steel pipe and prestressing steel strand.

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Torque tube


   A rectangular tube is a rectangular tube. Rectangular tube is a kind of hollow long steel, also known as flat tube, flat square tube or square flat tube (as the name implies). When the bending and torsion strength are the same, the weight is lighter, so it is widely used in manufacturing mechanical parts and engineering structures.
   There are two main production modes of rectangular tube, i. e. cold rolling and hot rolling. Hot rolling of rectangular tube is made by coiling hot rolled strip after processing. Cold-drawn or cold-rolled precise rectangular tubes are cold-drawn or cold-rolled precise rectangular tubes used for mechanical structures, hydraulic equipment with high dimensional accuracy and good surface finish.




Manager telephone022-28899403


Strip telephone022-28897079


Straight line telephone022-28897187 022-28899671


Stranded telephone022-28899678 022-28891659


Spiral telephone022-68589404 022-28899404 022-68576867


Pons telephone022-28870709


Fax telephone022-68589404


Websitewww.birdingtrek.com


First factory addressNo. 14 Zhenhai River Channel, Daqiuzhuang, Tianjin


Second factory addressNo. 1 Jinhai Industrial Park, Daqiuzhuang Town, Tianjin



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