玻璃钢矩形管 FRP rectangular tube

不锈钢矩形管 stainless steel rectangular tube

薄壁矩形钢管 Light-Walled Rectangular Pipe and Tube

矩形钢管 steel rectangular tubing

矩形钢管混凝土 concrete-filled rectangular steel tube

矩形钢管框架 rectangular steel frame

矩形管钢屋架 Rectangular tubular steel roof truss

矩形钢管混凝土桁架 concrete-filled rectangular steel tube truss