HG/T 20592  法兰 WN 50(B)-100 RF S=64RF10

wn50b-100rf S=64RF10

WN 50(B)-16 RF

WN 40(B)-25 RF S=4

WN 450(B)-16 RF-16

3 A3 S=4.506000-061

WN 16"-600 RF Sch80S

LWN 2"-1500 RF Sch40

WN25B-63FMS=4

47065.3 A32 A4-1/F R4h4/ 30�

SO 32(B)-16 RFS=80-F S0RFfFch40s3 FM sch4pampRJj@5c2@RF@44