NB/T 47022  法兰 RF 350-0.25 δ1=10

2 RF 350-0.25 δ1=10

WN50-150 FM Srf1000 rf58-1SCH8°2.

WN200-150RF SCH80S

WN25-40RFCH10PFB=918300 LM FM

DN500-PN10 PL FF Ⅱ

47023 FM 1900-2.5/T206RF RfF0

BI 800

WN 500(B)-16 RF

WN 3"-600 RF S=B=73

WN50(B)-100 FM S=5=5RF0199(800-1.6RF p½-120/