API608球阀第7版2020中英文对照

非专业翻译 仅供参考 Metal Ball Valves— Flanged, Threaded, and Welding Ends 金属球阀-法兰、螺纹、和焊接端 1 Scope 1 范围 1.1 This standard specifies the requirements for metal ball valves suitable for petroleum, petrochemical, and industrial applications— corresponding to the nominal pipe sizes in ASME B36.10M— that have: 这个标准规定了适用于石油、石化、工业应用的和公称直径阀门符合ASME B36.10M的阀门，范围如下： — flanged ends in sizes DN 15 through DN 600 (NPS 1/2 through NPS 24); --法兰端：DN15-DN600(NPS1/2-NPS24) — butt-welding ends in sizes DN 15 through DN 600 (NPS 1/2 through NPS 24); --对焊端：DN15-DN600(NPS1/2-NPS2); — socket-welding ends in sizes DN 8 through DN 50 (NPS 1/4 through NPS 2); and --套焊端：DN8-DN50(NPS1/4-NPS2); — threaded ends in sizes DN 8 through DN 50 (NPS 1/4 through NPS 2) --螺纹端：DN8-DN50(NPS1/4-NPS2) 1.2 This standard applies to metal ball valves with pressure classes as follows: — flanged ends in Classes 150, 300, and 600; — butt-welding ends in Classes 150, 300, 600, and 800; — socket-welding ends in Classes 150, 300, 600, and 800; — threaded ends in Classes 150, 300, 600, and 800. 1.3 This standard establishes requirements for bore sizes described as: 1.3本标准对通径尺寸的要求描述如下： — full bore; --全通径 — single reduced bore; --单缩径 — double reduced bore. --全通径 1.4 This standard applies to floating (seat-supported) ball (Figure C.1) and trunnion ball valve designs (Figure C.2). These figures are to be used only for the purpose of establishing standard nomenclature for valve components— other floating and trunnion designs also exist. 1.4本标准适用浮动（阀座支撑）球阀（图C.1）和固定球阀（图C.2），这些图仅用于建立阀门部件术语的目的。其他浮动球和固定球也可以适用本标准。 1.5 This sta...