In the production of cool rolling seamless steel pipe, its technology is complex, process is tedious and character is special, so the automatic control system of cool rolling mill is a complex system.
冷轧无缝钢管的生产工艺复杂、过程烦琐，具有独特的生产特点，因此冷轧机自动控制系统是一个复杂的系统。
The theatre steel roof of Henan Provincial Art Centre is a complex structural system, comprised of the in-plane penetrated weld pipe truss and three reinforced concrete elements underneath.
河南艺术中心大剧院是屋盖为平面钢管相贯桁架、下部由三个钢筋混凝土结构单元组成的复杂结构体系。
The present invention discloses a manufacture method for a composite layer of a complex alloy steel pipe, a fastening element, and a protective grating.
本发明公开了一种多元合金钢管、紧固件、防护栏复合层的制作方法。
There are aluminum-plastic composite pipe composite pipe, plastic pipe, steel-plastic composite pipe, copper pipe, and other complex plastic.
复合管材有铝塑复合管、涂塑钢管、钢塑复合管、塑复铜管等。
There are aluminum-plastic composite pipe composite pipe, plastic pipe, steel-plastic composite pipe, copper pipe, and other complex plastic.
复合管材有铝塑复合管、涂塑钢管、钢塑复合管、塑复铜管等。
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