MSS SP-110-2010 螺纹、承插焊、软纤焊、凹槽和外接连接球阀标准规范 美国阀门及配件工业制造商协会标准.pdf
MSS SP-110-2010 Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends Standard Practice Develo...
