HG/T 20592  法兰 PL 80(B)-16 GB=20FFF sch40F3130-26541-

PL80(B)-16 GB=20FFF sch40F3130-26541-

SO 1"-150 RF

PL400(B)-16RF HG δ02 b=0FRFRFRF Sch4050RFF S=4=16r C==4

WN 80-300 M B=77 A=899-42/B

WN200-900 RJRf1=0 HG/6RF54=20Smpampampa0-16

BL450-25RF-20.6=r&=& H=502 w

B WN 36"-300 RF B=Sc

WN150A)-1