HG/T 20592  法兰 WN 40-40 RF S=4 H1=82

WN40-40RF S=4 H1=82

WN 1 1/4"-150 RF Sch40S0SFF1.0

PL 600(A)-10 RF.6fFm/3b=3 fRF0 S=4 A=17=

SO80-150RF DFF b

WN 150(B)-63 M S=9/50

WN80-150 RF S/

SO450-10RF/ AFF B=

3 fm1500-1.0pampa-85ch409Mamppampamp

so 200-300 RF R�Б∙=

BL(S) 500-6 RF�