GB/T 12459  同心异径管 DN 1000×10-Sch80SRCh48 K=83

DN 1000×10-Sch80S RCh48 K=83

SO25-16 G16BRF25-101

BL50-25M D02h=24)-100rf8-20

PL400-6FF D=530 B=/016 RF-132RF15XXSch8c-fm

WN125(B)-40T70=4/@aFF05900-=259 f1=4.5 R=10=t6 wn

pl25(b)-16 ff d=110 k=7rf1000 RFc-2

PL 450(B)-10 Rf5o-3000s8=6rf b=3=b0

wn80