標準號：ANSI/ASTM B474-1999
中文標準名稱：UNS NO8020、UNS NO8026和UNS NO8024鎳合金電熔焊管規范
英文標準名稱：Specification for Electric Fusion Welded UNS N08020, UNS N08026, and UNS N08024 Nickle Alloy Pipe
標準類型：H62
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：H62
國際標準分類號：77.150.40
適用范圍： This specification covers electric fusion welded UNS N08020, UNS N08026, and UNS N08024 pipe suitable for high-temperature or corrosive service. (Although no restrictions are placed on the sizes of pipe that may be furnished under this specification, commercial practice is commonly limited to sizes not less than 8 in. (203 mm) nominal diameter.) Two types of pipe are covered as follows: Type I -All welded joints to be completely examined by radiography.Type II -No radiographic examination required. The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.