HG/T 20592  法兰 PL 50(B)-10 FFc0 RF f=2 b.700Ftm¬ī2=F-10 RF0(A)h40

pl50(b)-10ffc0 RF f=2 b.700Ftm¬ī2=F-10 RF0(A)h40

WN350(B)-100 Tt0 ff5 ÃŽT2s=16c/

WN 550-10RF12�F=/00 RJ Sch40H4fRFch416 R

WN 25(B)-25 RF S=≥3.38

WN250-300 RF Sch80F/15

WN 300-150 RF Sch40S26M0m5 RFchF-RF10r

WN50(B)-16 RF N=46 B

WN400-300 FM