HG/T 20592  法兰 WN 400(B)-40 FFampampampampampampampampa

WN400B-40FFampampampampampampampampa

WN20"-300 RF Sch40 S=16

WN200(B)-40 RF S=20/F2.ampnbs

DN125/PN16/01B

SO15-16FM RF DS

SO 65(B)-16 RF1п©б╘п�

pl25-16rf20592m2sme b16

3 M 500-1.0 δh80B=90.7h80Sâ=1520 D2=1419H4-

WN 20(B)-16 RF S=3f10

2