HG/T 20592  法兰盖 BL 65-16 FF0090 K=1200 N=1041 A/

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&ampampampaM740jmxin3H80S/Rf25RF S=41

WN40(A)-25T43M5001ЛЈ�s2B=12FS=/ch40-4.0