BS 4825-4-1991 Stainless steel tubes and fittings for the food industry and other hygienic applicatiBS 4825-4-1991 Stainless steel tubes and fittings for the food industry and other hygienic applications. Specification for threaded (IDF type) coupling
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。