HG/T 20592  法兰 IF 50-25 M50-150rfB=42 Y=/f hg/ b

SO 40(B)-16 RFF104L b=11850

IF50-25 M50-150rfB=42 Y=/f hg/ b

BL500(B)-25RF210mms15=T2

WN250-150RF Sch30100-150 rf/ hg5Krf s=31=1

WN 300-300 RF Sch40SB Sch40 S=5Sch40S820150 RF

BI1300-S s=3.5,61J0-6FM900-0.395R

WN25(B)-16 RF S30=3.54/u00fD=12c.5

NB/T