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DN350不锈钢管，壁厚9mm，每米重量是多少
DN350不锈钢管，壁厚9mm，每米重量是多少
2025-03-15 08:45:36
推荐回答（1个）
回答1：
DN350不锈钢管，壁厚9mm，每米理论重量78公斤
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