GB/T 12459  弯头 DN 20-Ⅱ-4.590ELch4 BB=580095/u00e5/public/data

BL20-16 RF00(B)-16RFg

1 RF 450-1.0)-16 RF4 RF Sh8

47022 rf1200-1.0/-736Fd=10F-800G=2hF15s

TPB-1 δ=8 S1=8f940

WN300-300 MFMIS B40RJRJ10c941040F

BBL 750-600 RFh40FSch43.55-2FRCSCHFt/u0=0RJ& M�

B PL 200(B)-16 RF

LWN50-300RF-

wn40-600rf sch160/0rf60SO