HG/T 20592  法兰 PL 65-6 RFhtfR0 RF Sch80f-1SOC=13.5FFfl0 S0-

法兰pl65-6rfhtfR0 RF Sch80f-1SOC=13.5FFfl0 S0-

47023fm600-4.0/Sch10Smp/506 rf s=5

pl15b)-6rf d=4011800chF1003c /c-

wn25-100 rf s=6 16mn 锻钢 抗 hic

WN80(B)-100FMS=4/RF s=562-c

wn40-16rf s22┐Р�J.8amp25 r-2 RF Sch6�

SO 80-300 RF04rf6 RFch8