GB/T 12459  等径四通 DN 1050-Ⅱ-3CRS)-6R5DampAb1ea80b-1

DN 1050-Ⅱ-3 CRS)-6R5DampAb1ea80b-1

WN 3"-150 RF Sch40S

WN 40-150 RF Sch40S

BL500(B)-10 RF4b=550F0-2

WN 150(B)-40 RF S=10

WN 40-300 M Sch80F

PL 300(B)-10 RF

wn100-1500rj asch80b1=6a RF Sch1�FJ Sch80SF RF RF@F4(a=22540R@p

WN 20-150 RF Sch40S