GB/T 12459  弯头 DN 30-Sch80S90ES5/885

DN 30-Sch80S 90ES5/885

pl500(b)-25fm00-19

BL 200(B)-10 RF 16rf Sch160ampam

SO500-10 rf40S800-0

LWN 25-150 RFF SCH4@422f¡22.n4sch80F Sc@0/5.R

WN50(B)-25 FM/00-1

pl150a-25rf16N=

BL 200-10 RFc-150/ S/B00 rf2=S==h20s5020RF20

SO 20-150 ffT2b=3�

wn150-6