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发明名称
METHOD AND DEVICE FOR MANUFACTURING ANGULAR STEEL PIPE OF LARGE DIAMETER
摘要
申请公布号
JPS5275647(A)
申请公布日期
1977.06.24
申请号
JP19750152105
申请日期
1975.12.20
申请人
NAKAJIMA KK
发明人
NAKAJIMA TAKU
分类号
B21C37/08;B21C37/15;B21C37/30;B21D5/02;B21D5/12
主分类号
B21C37/08
代理机构
代理人
主权项
地址
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