SB Screwed Bonnet的意思|示意
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SB螺纹阀盖
SB Screwed Bonnet的网络常见释义
螺纹阀盖 ... SAW PIPE: 是高频埋弧焊管 SB Screwed Bonnet 螺纹阀盖 SB Stud Bolt 双头螺栓 ...