GB/T 12459  弯头 DN 50-Sch10S45ELF40 RS10RFh2BII 1

DN 50-Sch10S 45ELF40 RS10RFh2BII 1

LWN 100-300 RF B=98 H=3510600-150 r

WN20(B)-25 FM S=404)3.5Ff8 sch845-16 FF/F

3 RF 400-4.0F B=193.70Aervlet

3 fm 2000-1.63.5/

PL100(B)-16t016RF B/ f1=3 d=220RF/1fh

WN200-100RFSch506501√Гpampquothg

DN15-PN40 PL

PL