GB/T 12459  异径三通 DN 900×900×550-Sch80STR

DN 550×550×900-Sch80S TR

nb=t47023-2012wn800b-16rf161l BN2.-20 n

3 FM 800-1.6/48-130 δ0=8uothg20615 wn400

PL 500-10 RF/ S=3.28F0MamTB0.

PL1800(B)-10RFampamp

DN 800-16 TS105980

WN450(B)-40FF07021 RF500-0.6-150

WN40-100RF-1.0法兰f6 G

JWN 50×80(B)