GB/T 12459  弯头 DN 40-Ⅱ-4.590ESf0c25h.16d

DN 40-Ⅱ-4.5 90ESf0c25h.16d

BL1200-150 RFh60

WN 16"-150 FF Sch40S

WN15(B)-16RF B=13

bⅠ1200-s/@BII 1000��mpampampatent/them

B WN 36"-150 RF

wn100(b)-16 rf0a3/u00c2/u/R

WN900(B)-10 RF S=6

WN 15-600 RF Sch4150f

WN350(B)-16