About KITAZAWA KIMIYOSHI
About aluminum base alloy
About metal pipe
About circular pipe
About specials pipe
About special forming
About formability
About job shop type production
About crushing
About roll forming
About plate thickness
About A5052
About incremental forming
About flattening
About roll forming
About thickness distribution
About Special forming
About 半硬質
About アルミニウム合金
About 円管
About 平坦化
About 可能性