GB/T 12459  弯头 DN 40-Ⅱ-490ESF500/6b�

DN 40-Ⅱ-4 90ESF500/6b�

BI 260027-3F- RjSch400615 WN40-10-d=88B=18 C=

BL 1000-2.5 FF

BII 2100s16Ff5-0b92r150 RF

DN900-PN2.5 WN RF Ⅱ S=4

PL 200(B)-16 RFδ0=830"-150 RF S=10.@RFSp&@t.5

BL20-300RFh4010.0/ RF0r310D=440

WN 200(B)-16 RF S=6

WN 50