HG/T 20592  法兰盖 BL 300-16 RFh0RJh40 s=10=-

BL 300-16 RFh0RJh40 s=10=-

WN50(B)-16FMS=5D=M-60SF m

WN40(A)-40 RF S=4b=4 D=25009F=30 C B13=40010FM50RF S=43

wn150-25 rf s=4.5F S=5.5-16s0F001000/46-Sch4am

3fm2200-1mpampa6Sc644-050 RFL500

PL250(a)-6 RF600=.6F50G-30 B=146400b)-160 fm s=4200S=3 c==1/