GB/T 12459  弯头 DN 80-Ⅱ-Sch8090EL

DN 80-Ⅱ-Sch80 90EL

WN350(B)-10 RF315Fch100

so600-40gF-RFRH300-600RJ

PL65(B)-10RF86-016 RFmpa

BL25-600 RF S100-2.5 sch40-10RJ32 n=12

WN 25-600 RF 4 H

WN 4"-300 LFM B=96 S=8=8wn15

WN 80(B)-63 M Sch80SSch401S RFm0=126 δs=10S

法兰 wn100-150 rf