標準號：BS 143 and 1256-2000
中文標準名稱：可鍛鑄鐵和鑄銅合金的螺紋管配件
英文標準名稱：Threaded pipe fittings in malleable cast iron and cast copper alloy
標準類型：V20
發布日期：2000/3/15 12:00:00
實施日期：2000/3/15 12:00:00
中國標準分類號：V20
國際標準分類號：23.040.40
適用范圍：This British Standard specifies requirements for design and performance of threaded pipe fittings in malleable cast iron and cast copper alloy for two basic designs: a) BS 143, with taper external and taper internal threads; b) BS 1256, with taper external and parallel internal threads. This British Standard applies to fittings in the following categories: 1) category 1: BS 143 design and BS 1256 design, in a limited range of malleable cast iron fitting sizes and types with threads conforming to BS 21 (ISO 7-1), and that are not included in BS EN 10242; 2) category 2: BS 143 design only, in a full range of malleable cast iron fitting sizes and types with threads conforming to ANSI/ASME Bl.20.1 (NPT); 3) category 3: BS 143 design only, in a limited range of cast copper alloy fitting sizes and types, with threads conforming to BS 21 (ISO 7-1) or ANSI/ASME Bl.20.1 (NPT). These fittings are for general purposes for transmission of fluids and gases up to the limits of pressure and temperature specified in this British Standard. They are intended for connection of elements with threads conforming to BS 21 (ISO 7-1) or ANSI/ASME B1.20.1 (NPT), in sizes 1/8 to 6 for malleable cast iron fittings and sizes 1/8 to 2 for cast copper alloy fittings. NOTE For use in conditions outside the pressure and temperature limits specified in this British Standard, reference should be made to the manufacturer.