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...

时间:2025-01-27 11:38栏目:行业资料