短语词组短語steel tube bloom 琯坯鋼grade steel cc bloom 鋼φ180連鑄坯grade 20 steel cc bloom 鋼φ連鑄坯continuous casting steel bloom 連鑄大方坯steel 20 tube bloom 琯坯鋼Wild steel bloom 野鋼花steel bloom for tube -making 琯坯鋼Bloom Steel 初軋鋼 返回 steel bloom