弯头 DN 20-Ⅱ-Sch40S90EL/ scH80/40

DN 20-Ⅱ-Sch40S 90EL/ scH80/40

WN 100-300 RF Sch80S

wn50b-40fm s=5RF1=658RF/)-=5k X 21

bl125-160t/

SO600-150 RF0-120 R rf/st/S=10/m HG/T29/RF S=14/ r=/u00

47023 FM450-1.6 δ=48 δ0=6

WN20-160T1/

SO 450(B)-16 RF

PL250(B)-6FF C=22 B=277 b=7

法兰wn2