BS 2871-1-1971 Specification for copper and copper alloys. Tubes. Part 1 Copper tubes for water, gasBS 2871-1-1971 Specification for copper and copper alloys. Tubes. Part 1 Copper tubes for water, gas and sanitation.
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。