HG/T 20592  法兰盖 BL 350-6 RF RF.56FL403 rf1100h432D rf sch40 h=1

BL350(A)-6RF RF.56FL403 rf1100h432D rf sch40 h=1

WN40(B)-40RF S=4mm16RF40=2=6f1 s

WN20-300 RF Sch406+0.300Ff B=525 C=1F S

PL 200(B)-10 FF�2=32 H=15010SfB)53.5000T2sch80s0(B)-16

WN25(A)-16FM40S RJH-170-16550RHGCAD6rfF=8rf h=90-2

WN150(b)-40T B6mn RJ