BS 4942-1-1981 short link chain for lifting purposes Part 1 Specification for general conditions ofBS 4942-1-1981 short link chain for lifting purposes Part 1 Specification for general conditions of acceptance
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。