Bent steel tubes: a single tube runs the entire length

A close-up of a furniture's steel tube frame, entirely formed from a single 22mm diameter seamless steel tube continuously bent seven times by a tube bending machine. Each bend has a consistent radius of 60mm, with no welded joints—the only weld seam is at the butt joint of the end and start points, and it has been ground down to be almost invisible. The tube wall at the bends is slightly ovalized, an inevitable result of cold bending, left unpolished. The surface is matte chrome plating, reflecting the environment without glare. Where the tube contacts the seat surface, it is secured by hidden internal sleeves. Dark background, emphasizing the continuous line. Avoid: frame made of multiple welded sections, inconsistent bend radii, using square tubing, bright chrome surface causing strong reflections.

Translated from Chinese by AI.

一件家具的鋼管框架特寫,整支由一根直徑 22mm 的無縫鋼管以彎管機連續彎折七次而成,每個彎的半徑一致為 60mm,沒有任何焊接的接點——唯一的焊道在尾端與起點的對接處,並已打磨到幾乎看不見。彎折處的管壁略有橢圓化,是冷彎的必然結果,不做修飾。表面是霧面的鍍鉻,反射環境但不刺眼。管子與座面接觸的地方以隱藏的內襯套固定。深色背景,強調那條連續的線。避免:框架由多段焊接而成、彎折半徑不一、使用方管、表面亮鉻造成強烈反光。