石油和天然气工业. 带IX密封环的紧密法兰接头

[中文适用范围]： 本文件规定了圆形钢和镍合金紧凑型法兰连接及相关密封圈的详细制造要求，适用于等级名称 CL 150 (PN 20) 至 CL 1500 (PN 260) 的指定压力和温度，公称尺寸为 DN 15 (NPS ½) ) 至 DN 1200 (NPS 48)，对于 CL 2500 (PN 420)，公称尺寸为 DN 15 (NPS ½) 至 DN 600 (NPS 24)。 注 NPS 根据 ASME B36.10M 和 ASME B36.19M 表示。 本文件适用于石油、石化和天然气工艺管道中使用的焊接带颈法兰、盲板法兰、桨式垫片和垫片盲板（桨坯）、阀门/设备整体法兰、孔板垫片、异径螺纹法兰和刚性接口行业。 本文件适用的温度范围为−196 °C 至+250 °C。 本文件不适用于外部压力。 [外文原描述]： This document specifies detailed manufacturing requirements for circular steel and nickel alloy compact flanged connections and associated seal rings, for designated pressures and temperatures in class designations CL 150 (PN 20) to CL 1500 (PN 260) for nominal sizes from DN 15 (NPS ½) to DN 1200 (NPS 48), and for CL 2500 (PN 420) for nominal sizes from DN 15 (NPS ½) to DN 600 (NPS 24). NOTE NPS is expressed in accordance with ASME B36.10M and ASME B36.19M. This document is applicable to welding neck flanges, blind flanges, paddle spacers and spacer blinds (paddle blanks), valve/equipment integral flanges, orifice spacers, reducing threaded flanges and rigid interfaces for use in process piping for the petroleum, petrochemical and natural gas industries. This document is applicable within a temperature range from −196 °C to +250 °C. This document is not applicable for external pressure.