HG/T 20592  法兰 PL 125(B)-16 RF�@ RF40 GF2 RF/118Fpampamp0R

20592 PL125(B)-16RF�@ RF40 GF2 RF/118Fpampamp0R

WN 80(B)-25 FF=4.668 S=Sch80Sl0-16

wn 1000(b)-10rf sأ¯آ50-10

SO 50-150 RF=1

BL80-40FF0(A40S/FH�´s=6=2

WN20-100RFwn250-63 fm7023h100.)-152.c3

DN15-PN400 WN F в…Ў SmpampR0-406R4S

2 RF 600-10-4