标 准 编 号：DIN 7527-5-1972 简体中文标题：钢锻件.自由锻造的轧制及焊接圆环的加工余量及允许偏差 繁体中文标题：钢锻件.自由锻造的轧制及焊接圆环的加工余量及允许偏差 English Name：Steel Forgings; Machining Allowances and Permissible Variations for Open-die Forged Rolled and Welded Rings...