HG/T 20592  法兰盖 BL 80-40 RF5-R@W1

BL 80-40 RF5-R@W1

DN65-PN160 WN RF@S5 RJrvle0@RF Sch807FS10R@R4Sc2@RF@Rjc5 RJb=5

SW14-900 RFu02@���2.5 RJ-R�1@6R

BL 250-150 RF5@b=fs2@RF@4

SO 40(B)-16 RF04R@R 1JsRF@F@R

wn15-2500 fm schargeF0/u00a250RJb004.5F1RFFFF0015 RFFC=11

WN rF 30K 15A