PREPARATION OF ALUMINIUM FINNLOADED IRON PIPE
申请公布号:JPS53132449(A)
申请号:JP19770048171
申请日期:1977.04.25
申请公布日期:1978.11.18
发明人:AKIYOSHI KIN;HASHIMOTO MICHITAKA
分类号:B21C37/24;B21C37/22;B23K1/00;B23K1/18;B23K35/00
主分类号:B21C37/24
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