GB/T 12459  弯头 DN 100-Ⅱ-890ES7h40-600 RF Sch40)-16

DN 100-Ⅱ-8 90ES7h40-600 RF Sch40)-16

wn250(b)-25 M-Ff12RFFR3 b60-0a-25r

PL200B-16RF b=4

WN80-300 M B=7

WN125B-10RF3b)-16 rf40Sch40/1.f1=

PL100b-40rf b=3450rfF1400-0.25/25 MF=

PL200B-16RF

47023 M450-4.0 δ1=22.0/40-110)-14

wn200-150rfsch41

WN 25(B)