GB/T 12459  偏心异径管 DN 400×15-Ⅱ-6RE=7E5f sRFS

DN 400×15-Ⅱ-6 RE=7E5f sRFS

WN50(A)-100G NUL5S=3r

wn 20(B)-63 RFaF0-300 RF s=7F

WN40(A)-10RF D�5S48/@4 H01.0 S=40 SFscN5

pl400b-6ff010 b=2 CrvletM00rf02810tml-pamb0

wn 125(b)-16 fmM-10RF-16RF50(a)-1

wn 65-10fm s=6.7150-190

2 FF 2800-1.020δ1=20

B