HG/T 20592  法兰 PL 100-25 FF B=S/ w

PL100(A)-25 FF B=S/ w

A WN 1000-900 RF

3 RF 900-1.01.050-ch4�ch4

SO 125-150 RF RF150 RF RJ FM��77.5RJ10���77.5

BL450-6RFF1rfF Sch4аfF/ FSch80

WN50(B)-16 RF s=3.5 HG/2

WN 65(B)-63 RF

HP-2 s�E00 RJ Sch20-150 ST Sch40S���77.

BL