METHOD FOR WELDING PERIPHERAL JOINT OF DUPLEX TUBE,申请号JP19890149879-传众专利搜索

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发明名称	METHOD FOR WELDING PERIPHERAL JOINT OF DUPLEX TUBE
摘要
申请公布号	JPH0318475(A)	申请公布日期	1991.01.28
申请号	JP19890149879	申请日期	1989.06.13
申请人	NIPPON STEEL CORP	发明人	TERASAWA TAKESHI;HAYASHI TERUHIKO
分类号	B23K9/23;B23K9/028	主分类号	B23K9/23
代理机构		代理人
主权项
地址

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