GB/T 12459  异径三通 DN 550×550×40-Sch10TR RFw6..20028

DN 550×550×40-Sch10 TR RFw6..20028

WN50-40 M SCH800020Bquo

wn80-25rfs=10.56Cr19MFf0sRJ10r4-170T S=409PL150

SO40B-16 RF/1c-00

WN600(B)-40 FM S6

WN250-25 RF/8=

WN80-150RF hg/t2061

SO 20-16 RF16300-Cr

SOP FF 5K 400A800-0.25rfC

WN250(B)-25 M S/0 RF Sc