发布时间:2025-01-23 03:23:16
Q235:表示屈服强度是235。也是很久以前,行业中传说中的A3钢
一般的碳素钢,用途较广,做棒料、板材都可以
根据品级高低,分为A、B、C、D、E。A最差,E最好
有没有人在帮忙回答下ups蓄电池最大的品牌时哪家要国内的质量好相对便宜
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