METHOD OF PRODUCING HELICAL-SEAM TUBES FROM ROLLED STEEL STRIP
申请公布号:SU1704879(A1)
申请号:SU19864170953
申请日期:1986.12.31
申请公布日期:1992.01.15
发明人:PUNIN VLADIMIR I,SU;MOLCHANOV ANATOLIJ P,SU;KAZAKEVICH IGOR I,SU;SOKOLOVA OLGA V,SU;PUNINA MARGARITA V,SU;KOLESNIKOV IGOR G,SU;CHEKHIN ANDREJ F,SU
分类号:B21C37/12
主分类号:B21C37/12