GB/T 12459  弯头 DN 20-Sch40S90EL S

DN 20-Sch40S 90EL S

WN500(A)-600 RF

WN 500-600 RF Sch80S/RF108c/u00T5 RJ R0-F

LJ 18"-1500 LM Sch4

LWN32-300 RF SchFS121-1.0

PL 15-6 rf-90F00S/2@RF@4RFF S�77.5RF0-h�40F3ata/mS/2@RF@4RFF S

pl125-6RF4150FRF1RF SC

PL200A-16FM16

PL25-16RF b=3 D=1