GB/T 12459  弯头 DN 50-Sch40S90EL150h20

DN 50-Sch40S 90EL150h20

SO 100(A)-16 RFL

WN 600-300 RFs204(b)-16 rfrfb1

1 FF 1500-1.020δs=6=20SSch

pl100(a)-16ff150rf0-1.00 l0 C=0/C-FM600

so200b-40m=1f S=4.5315=2520-

WN450-900 Rj.4)-1 F

2 FF 1500-1g0H40cf sc0fmcJ2-h80ampampnb�ch40s.6600-1.

PL 1