["HG 25982",,"HG 是抄的EN GS 22589 标准，ENenGS 标准板式平焊法兰都做到DN368了为什么HG 为什么范围不抄的大一点呢GB 尅EN9 就抄到DN 8了请高手指教谢谢！",""几十 十年年才更新一次。就是抄，抄都抄不全 版本过多。 HG GS GAGS241SH3486",""这个问题我不太清楚希望有大神能给予解惑。"

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