法兰 BL 25(B)-16 FFF0 δ=14

bL25(B)-16 fFF0 δ=14

so200(b)-600rf RF SS=o50(a)-16 r

PL200(B)-16RF52500-2.200-150RF6RF=126MF SCH160-s

NB/T47023RF600-2.50-1.0/62-115500-2. Sch40Sch30000h60cpaR

PL100(A)-16 RF=150 K/

SO 250(B)-16 RF S

47023 M500-1.6/

PL100(A)-16M2(B)-500f

NB/T47065