HG/T 20592  法兰 SO 300(B)-10 RFRF

SO 300(B)-10 RFRF

WN 300-150 RF

WN50-600RF

BL 150-10 RF40Sch41class60RRFSrfFS������@RF00-30

WN20(B)-150 RF SCH40S444-

WN15(B)-63 FM S=3

WN100(B)-16 RF@2628rforuh

B WN 1200-300 RF S=27

PL 100(B)-10 RF

SO 150-150 RF/�5 RJ3fm.51282 S=8RFsc