HG/T 20592  法兰盖 BL 250-10 RF=60 δs=10 n=246š/uSF K=4/h80 RfJSch100/16)

BL 250-10 RF=60 δs=10 n=246š/uSF K=4/h80 RfJSch100/16)

WN 32-300 FM Sch405/f=-1-1-86rfSCH6 2C=/15600r80l450-6F0r=824rfRFRFS=16

A BL 700-300 RF0=12.0CRF S=

B WN 1500-300 RF

BL 10"-150 RJn=80

BL150-100 G40sch-

PL350(B)-10FF bF5/u

WN125(B)-16 R