NB/T 47065.1  支座 BⅠ 14092---80Sf540rf500

BI14092---80Sf540rf500

SO100()-10RF0-2009/-4002S.15/FRF Sch/10 DN=140

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47065.3 B5

47022 M1300-0.6

LWN250-300 RF Sch40-6

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DN 250-