HG/T 20592  法兰 BLS 500-25 RFRJ44 rf 1Js-16 Rh/tm�Sа

BL(S) 500-25 RFRJ44 rf 1Js-16 Rh/tm�Sа

WN 1-1/2"-150 RF S=5.49

WN350-150 RF S=4-4.5 TRK 65AFS5 RJ2A=F6

wn250(b)-63 gRF/data24FcF S8

SO 50(B)-16 RF

WN50B-300RF S=6.5 Hsr

WN20-2500 RJ S=5

PL 80(B)-10 FF D=185 C=12 B=115

WN 20(A)-160 M S=4

nb/t4