nbkxhwd@163.com 发表于 2016-6-28 16:55:12

EN 1503 下载

BS EN 1503-1 2000 Valves - Materials for bodies, bonnets and covers - Steels specified in European Standards
BS EN 1503-2 2000 Valves - Materials for bodies, bonnets and covers - Steels other than those specified in European Standards
BS EN 1503-3 2000 Valves - Materials for bodies, bonnets and covers - Cast irons specified in European Standards
BS EN 1503-4 2002 Valves - Materials for bodies, bonnets and covers - Copper alloys specified in European Standards

admin 发表于 2016-6-29 11:14:16

谢谢您的分享，金币已奖励
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