GB/T 12459  同心异径管 DN 450×15-Sch40SRC 9610rf

DN 450×15-Sch40S RC 9610rf

法兰 pl200(b)-16rf-20

WN20B-40M/RJ1@A 1-0800-0.6.HG).09：bl450-150rff f1=3g0FFRFRFb=7Ã¥ s=616fm

BL250-300RF sch8050 R

WN 250-1500 RJ Sch

2 FF 1400-0.6F6=1(B)-25 Rfc21=5-10R

PJ/SE 50(A-25 RF Sch40

HP-2 –њв

PL200-25