GB/T 12459  异径三通 DN 900×900×20-Sch10STR0RJ)-16fB)-16Rs

DN 20×20×900-Sch10S TR0RJ)-16fB)-16Rs

so40-150rff150(b)-/0=85-280=170/22

1SO25(B)-10RF Sch40)-RF Sc0=14wn1M S=12b=4h40160

wn 25(b)-40 rf s=306=

SW40(A)-16RFRF8.0=3 d=616c=44F

A WN1100-600RFh06 δ0=10��5s/25-

B WN750-150 RF B1.FRFRF b=2400-1=cha