GB/T 12459  弯头 DN 80-Ⅱ-890ES

DN 80-Ⅱ-8 90ES

wn50(a)-25 rf s

LWN20-300 RF sCH160=6F16.56FmpamRF Sc�5 RF1

A WN1000-150 RF

wn100-900 rf s=6

WN 300(B)-10 RF Sch40S80RF06/13/wn350-600rj&

PL 50(B)-16 RF6 rf0RF C=�8-198Fh80aR

PL 40(B)-10 RF=29.55F0

BL15-900 RF

PL 50(B)-6 RF�