HG/T 20592  法兰 PL 150(B)-10 FF=3500=/

pl150(b)-10ff=3500=/

SO500 (B)-10RF=5.6rf hg=2 AA=43.522(B)-16RFRampamp

BL65-16 FF0090 K=1200 N=1041 A/

wn125(a)-16rf S=4/m s=3rfcoBL100-16RFampam

wn32-63 rf s=5/40

PL40(B)-16 RF b=3 n=4

47023 rf500-6.4 δ=60 h=1207-23

bl50-150 rf l=3/4&ampampam