NB/T 47021  法兰 FM 1200-1.0 �

1 FM 1200-1.0 �

WN50B-25RF S=3.p9RJchF R

WN 250(B)-16 M S=5 C=25

WN40-300 RF SCH40 20615

PL 40(A)-16 RF

PL100(B)-16 RF

BL 25-600 RF�F5@P0-

WN-250-300 RF

BI 1461

WN4"-150 RF Sch10@RF@4457 53 tb)-16 rfpa�5@4F0=8HGRF RF-1RF0sc@S/2@Fj@5@F Sc�