Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: JIS G 4904:2017
• Năm ban hành / Publication date: 2017
• Tình trạng / Status: A - Còn hiệu lực
• Tên tiếng Anh / Title in English: Seamless nickel-chromium-iron alloy heat exchanger tubes (Foreign Standard)
• Số trang / Page: 20
• Phạm vi áp dụng / Scope of standard: JIS G 4904:2017 specifies seamless nickel-chromium-iron alloy tubes (hereafter referred to as tubes) to be used, for example for heat exchangers or condensers in chemical and petroleum industries, and steam generators in nuclear industry, where the tube is designed for exchanging heat between inside and outside of its body. However, this Standard is not applicable to steel tubes for fired heater. ; The supplementary quality requirements and U-bend tubes, which can be specified by the purchaser upon the agreement with the manufacturer, are specified in Annex A and Annex B, respectively.