HG/T 20592  法兰盖 BL 500-16 M/190h4065650-

bl500-16M/190h4065650-

WN250-600RF+B)-/RFF000/Th

AWN1000-300 RFf-1SO3F40/data/src/haib

WN80-150 RFb)-16´1=-150RF

WN200-150RF SVH850 RF S=Sch

PL 150(B)-16 RF50 RF S=10 S=S=161200991F Sc

WN50(B)-600 RF SCH40-0.60B=33 H=5

WN25-100 RJF HG/T20615r

PL150-