... various standards such as Ellipse tube, semicircle tube, arch tube, fan-shaped tube, triangle tube, hexagon tube, eight angular tube and so on. ,about ... special sizes as you request.Tianjin Yu Xing Steel Tube Co.,Ltd is located in the industrial park of JingHai County ... manufacturing base,Tianjin Yu Xing Steel Tube Co.,Ltd is subordinate to Tianjin Yu Xing Steel Tube Group , together with Tianjin ...