GB/T 12459  弯头 DN 65×40-Ⅱ-490ELR202160.25R0-0.6.0

DN 65×40-Ⅱ-4 90ELR202160.25R0-0.6.0

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

pl125(b)-6rfb1=58wn400-60 RF-1.5ch450-0.6/

so100-40m06 RFA2(D45E3D3Dlg

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

bl125B-40RF=12-1.0h800-1.0/a0.6=25bR3

wn 100-600 fm422/u00c

WN 900-150 RF

bl