大型波纹管是航空模拟试验台所需的特种管材。目前国内外主要是采用液压成型法生产,过去我国只能生产小直径波纹管。上海异型钢管厂的广大革命职工,遵照毛主席“独立自主,自力更生””的教导,于1973年5月开始研制辊轧成型法生产波纹管的新工艺,并于1973年11月成功地试制出直径为3.4米的大型航空用波纹管(如果采用液压法成型直径3.4米的大型波纹管,必须 Large bellows is a test tube for aeronautical simulation required special pipe. Currently at home and abroad are mainly used hydroforming production, in the past only the production of small diameter corrugated pipe. The revolutionary workers of the special-shaped steel pipe plant in Shanghai, following Chairman Mao’s “Independent and Self-reliance” teachings, began to develop a new process for the production of corrugated pipes by roll forming in May 1973 and succeeded in making a trial of diameter 3.4 m large aviation bellows (if the hydraulic method of forming a large diameter 3.4 m bellows, must be