HG/T 20592  法兰 PL 250(B)-16 RF b=33/AB)-rf RF

PL250(B)-16 RF b=33/AB)-rf RF

PL40-16RF B=38ampampampampaRF═�040-105

WN 100(B)-16 RF S=3.6

so150-150rf b=76/7.550-300B-

IF 150-100 RF S0=22 H=300

wn500-150rf asm06-1880H=276-2

A 20000RF4o1501=32/RF-f/

PL 500(B)-10 RF3 tt21=3 f3Sch206

WN 250(B)-63