HG/T 20592  法兰 PL 250-40 FF/j-40S=7F00

PL250-40FF/j-40S=7F00

pl80(b)-2.5m-016GSch60FF14/0-150

BI 2300-Fh8

PL150-16RF B=G3.5-190 S=16

BⅠ2000-Sl=23 n=20

SO 500(B)-16 M351)-1)-25 RF Sch80SRF4FB150rfFF RF R b=Jch

3 T 1200-6.4 δ0=20

DN40-PN100 PL RF205 RF R44sF RRF4F50R0 b=4174080S5 r15

3