
Frank_2013 发表于 2022-11-5 17:15
楼主辛苦了,就是太贵了
SHT-3406-2022石油化工钢制管法兰技术规范.pdf (1.91 MB)
SHT-3408-2022石油化工钢制对焊管件技术规范.pdf (1.52 MB) 手机版|Mammoth Forum - Ride on Dreams, Live Up to Youth
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