標準號：ISO 4231-1987
中文標準名稱：圓柱管螺紋的手動和機動圓板牙 G系列
英文標準名稱：Hand- and machine-operated circular screwing dies for parallel pipe threads - G series
標準類型：J41
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：J41
國際標準分類號：25.100.50
適用范圍：This secind edition cancels and replaces the first edition (ISO 4231:1977). Is a supplement to ISO 2568 and ISO 4230 and lys down the diemensions of these screwing dies intended for production of parallel pipe threads in accordance with ISO 228-1. Diameter, thickness and fixing dimensions are accordance with ISO 2568 so as to permit the driving of and-oprated dies with the aid of the die stocks defined in that document.