标 准 编 号：ASME B29.21M-1996简体中文标题：水、污水处理设备用700级焊接钢和铸造链,附件及链轮繁体中文标题：水、污水处理设备用700级焊接钢和铸造链,附件及链轮English name ：700 class welded steel and cast chains, attachments and sprockets for water and sewage treatment plants...