HG/T 20592  法兰盖 BL 15-100 RFF=64F S=1

BL 15-100 RFF=64F S=1

BL400B)-16RF,HG20592650-1.0150610-1

HP-1D=-prffR0/146 rf b=3

WN 20"-150 RF B1.01.0ذ¨آ°ذ²ز–ز³ذ�

LWN20-300 RF B=210 RF Sch420m1805R02a80ch160fF

PL65(B)-16 RJm=158hgFFRFf470 s��mpa0R�8a��▓п

WN80(B)-2