GB/T 12459  弯头 DN 65-Ⅱ-345ELlh40/-d=1254FFS8h8/-1.6/84p-3r)-

DN 65-Ⅱ-3 45ELlh40/-d=1254FFS8h8/-1.6/84p-3r)-

wn15b-25rf5(b)-100rf0050(B)-16RF B=

WN 100-150 RF S=20 rfampa&

PL 40(B)-16 RF12.f(

WN250(B)-40 mf0 rf FM45ch4070=3 D=210COK=8.47-o

wn150-63 mfmrf

WN80-300RF RF145F0RF0RFr

WN25(B)-16RF S=3/R

wn80b-25