GB/T 12459  弯头 DN 400-Sch6090ELFSch40F Sch

DN 400-Sch60 90ELFSch40F Sch

3 M 1000-6.4 δ0=2010FFF

WN 80(B)-16 RF S=10

PL 400(B)-10 RF

3FM550-2.5

SO 1 1/4"-300 RF

PL25(B)-25RFf60Fh5404

BL250(B)-16RF/0/F42d=J B0RF- s=3

DN 450-Ⅱ-8 TS

PL 200(B)-16 RF f1=3 C=20 b=F fF-4.0h80 BB=&0-1525rf3/48