HG/T 20592  法兰盖 BL 200(B)-10 FF/S5&

Bl200(B)-10ff/S5&

PL200B-10RFf10ONR16

PL125B-40 rfRF0/2

WN 50(A)-25 RF S=4

WN1800(B)-10 FF

BL500(B)-25 RF

3 C7

B bl 1100-150 RF B=1089

SO 50(B)-16 RF

PL25-16RF0rf0s S=400S25F0 RH1=7/stati=60H0-300 RF Sch8000-Âpampampampquot615-2009)-25 FM0/11B SCH40