GB/T 12459  同心异径管 DN 100×80-8.56RC=6S LJSF

DN 100×80-8.56 RC=6S LJSF

wn40-150rf s=4.5

BL80-63 RFh84Sch30B)-16 RF0Sch40S0REF.RF0SRF@WN� Sch7.5 RJ��9-35

WN450-40rf=1N4

WN100(B)-63m S=5f

WN 450(B)-40 M S=14

WN40-150 FFF2400FF016-gc-2

SO65(B)-25T50-0SCH40 r4013425fâRF0050 RFS-s=/

WN 250(