DIN 3230-6-1987 Technical delivery conditions for valves; requirements and methods of test for valveDIN 3230-6-1987 Technical delivery conditions for valves; requirements and methods of test for valves for use with flammable liquids
部份国外标准涉及版权问题,所以全部国外标准于2013年02月,全部删除!相关页面仅提供参考消息。