GB/T 12459  弯头 DN 25-Ⅱ-490ELpwd=t

PL80(B)-16M=0RFB=

DN 25-Ⅱ-4 90ELpwd=t

PL 400(B)-6 FF50 RF B=7381m.htmlRF2rF AS

BI 1800-S h=300RFampFF0 RFF162pF0@/FS00°Р�

wn200-300 m schFFM=38SC3q. RF

wN32-40GFbRFF 25-150rf1.schFFF/100-180

WN 125(B)-100 FMSch

wn150(a)-16rf sch80150 RF

WN100A