HG/T 20592  法兰 WN 500-100 RF S=3

WN500-100 RF S=3

WN 25(B)-63 M S=5

LWN 1/2"-600 RF Sch80S

WN 20"-2500 RF

WN 3"-150 RF Sch10S

TPB-1-1-b��¿

3 FM 800-2.5 δ0=6

PL450-6RF

PL40(B)-40RF

PL450-10 RJ0006F5 RJ000S54 nF�6F 900F00RJ000f/@BL100-1F401000--6BF@4 Rch4755-R@0