内筋嵌入式衬塑钢管卡环式连接施工技术申瑜琼【摘 要】This paper introduced the reinforcement embedded within line model steel tubes, elaborated the process principle of card ring connection, analysed the advantages of card ring
内筋嵌入式衬塑钢管卡环式连接施工技术申瑜琼【摘 要】This paper introduced the reinforcement embedded within line model steel tubes, elaborated the process principle of card ring connection, analysed the advantages of card ring