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一、前言从火力发电厂的设备开始,到石油、石油化工及高压合成等厂的设备,逐年都向大型化发展,因而,随着大型化对温度,压力等方面的工作条件要求更严格了,使用于这些工厂的设备上的各种钢管要求质量高又可靠。为此,必须进行高精摩又可靠的检查。本公司(即日本钢管研究所)刚刚开展采用无损检查,随着不断的发展,逐步扩大
I. Preface Equipment starting from thermal power plants and going to plants such as petroleum, petrochemicals and high-pressure synthesis plants have been increasingly developed year by year. Therefore, with the enlargement of the requirements on working conditions such as temperature and pressure, , The various pipes on the equipment used in these plants require high quality and reliability. For this purpose, a high-quality and reliable inspection must be carried out. The Company (ie, Japan Steel Tube Research Institute) has just started using non-destructive inspection, with continuous development and gradually expand