HG/T 20615  法兰 SO 150-150 RFvlet/admin-h80s RF cSch60=

SO150-150RFvlet/admin-h80s RF cSch60=

SO 10(B)-16 RFf51/FF80Fh160F 15undef

SO 10-300 RFRF ⅡS=10F S=785 SF

Pl 600(B)-6 RF-0.250

SO 100-150 RF0-1600hFsch10sch

SO 100-150 RF H=30=120 n=4-166� b

Pl25(B)-25 RFe0 g8 sch0m040

Pl100(B)-6RF666

wn 32-900