HG/T 20592  法兰盖 BL 400-10 RF b=3)-1 RF HGaf/54

bl400(a)-10rf b=3)-1 RF HGaf/54

BL 80-63 RF563 MF)- wn100-25 rf s=8R=16sole/git

pl250b-16rf bRF¼Fh40150 C=60

HG/T 20592 法兰 PL32(B)-2.5 RF S30408

BL10-150RF

3 RF 1300-4.010 RF S=40.53=65-0.¦Â°p

WN50-16RJs=163h407.3 A=304.0-135Famp6LECT