HG/T 20592  法兰 PL 150(B)-25 RF RF0K 40AF1852 H=2828SCH40S-

pl150(B)-25 RF RF0K 40AF1852 H=2828SCH40S-

BL500(B)-25 RF-1.0S=09 PL10 s=

wn 80(B)-40 RFFB)-16hhgп╡п╕п■п╡п╔п═Б�

BL 32-150 RFRF R(A)-6340RF)s=5h1=12am

WN500(a)-16RF125-16r500-2.5f/RFS=4=2HG2RFRF

wn25(b)-25fm s=/RFch4049F ff00(b)-2