HG/T 20592  法兰 PL 100-16 M(4500Љ=5R=4H1=12 S==

PL100-16M(4500Љ=5R=4H1=12 S==

so20(b)-16rf hg/t20615.

SO 350-150 RFF RF6 RF S=65-)-16rf.6FS=5-1.62Cr1R

wn200-160rj-

WN80(B)-25 RF2G)-1

WN 600(B)-25 RF/54=61M00

PL150-16RFB40.66024702

BII 1200F0RF-0/

WN 1050-300 RFT20592-2009 RF S

SO 500-16 rfSFh60C