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1 | 补强圈\DN500×6 JB/T4736 Q235B | 1 | ||||
2 | 透光孔盖\DN500-B GKG500-B 20# | 1 | ||||
3 | 泄压人孔\2.0 DN500 Q235B+304 | 2 | ||||
4 | 泄压人孔\DN500 PN2.0 304 | 1 | ||||
5 | 透光孔\DN500-B GKG500-B 20# | 1 |