ER50-4とER50-6の違い
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C02ガスシールド溶接に使用する場合、フランジと配管はいずれも20号炭素鋼です。ER50-4とER50-6の違いは何ですか？ER50-6の方がいいですか？
化学成分が違います。。強度等級が異なります。。。衝撃靭性の要求は異なります。。 全体的に見て、50-6は要求が高い。。。
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