HG/T 20592  法兰 PL 40-25 RFch4rfR28.20-1

pL40-25RFch4rfR28.20-1

PL 80-16 FM=4 A=1681.SCH400R12050s8Fch101

SO 1"-600 RF

BL350-300RFSRFM

PL200-6RF8F0

PL200-16RF1.520δ0=-

Pl400-10rf f S=/

PL 200(A)-16 RF

WN 20(B)-16 RF S=8

SO 125(B)-16 RF 500-1= SF-4.0HG/-105 b-12 sc0-1RF ⅡRF6=1ff2mp;-