GB/T 12459  弯头 DN 200-Sch10S90EL δ=4

DN 200-Sch10S 90EL δ=4

BL 32-150 G==10/4mp

wn 50(B)-10 RF/F B=741000-150 R6/T205F Sch40SCh409.57m(b50nm

bl200(b)-100mh10s=1(B-0ch30F/'mpampampampampampamp

47023 FM450-1.≥8=3

PL15-16 RF=80-401S8

BL250B-16RF0004pl65(b)-16F S=300(B)F Sch40 H1

so25-1