NB/T 47021  法兰 FM 000-0.6/6/150-2500S010RF b=5=1

47021 FM000-0.66/150-2500S010RF b=5=1

bii2300/0-1.0FMmB=7643 sch8035 d=SRFf¦Ã

WN 350(B)-25 RF S=1006 RF/u0c==8cuotn40/50 RJ SCH40S K=120

WN20(B)-25m S=3m H=150h0-1.6/1

PL50-16RF b=3.=241.5Ãpafs=pwd

3 M 350-1.00= R=10RF ScFRfδ58 d=143

WN15(A)-2