GB/T 12459  偏心异径管 DN 40×15-Sch10RE

DN 40×15-Sch10 RE

WN 150(B)-40 M

AXA-1

PL50(B)-16 RF

DN 20-Sch10S 45EL

3 FM 700-4.0 δ0=6

WN 3/4"-150 RF

DN32/PN16/02&36B

SO 50(B)-16 RF

PL 250(B)-10 RFf300 RF Sch40Sc RFtcSc0S6 RF00-R��1aSW-A RF Ⅱh40 A=377 S=8RFF8=4b= T Sch40/900 RJ S=RF