HG/T 20592  法兰盖 BL 40-16 RF3/6 RFB)-4.3.ch4ff).255f)

BL40-16 RF3/6 RFB)-4.3.ch4ff).255f)

lWN 50-150 RF S=56-16RF2

1 RF 1200-0.6 δs=15

LWN100-1500RJ/-CH S€F0.(b)-2

HG/T20592-2009 BL200-40Mmpa

3 FM 800-4.0 δ0=10F

wn600b-10gF ,HG/A=16

WN50-25RF S=5���s4.����@S7RFch0RF00.5 R�WN 40�6