GB/T 12459  同心异径管 DN 80×65-4RC

DN 80×65-4 RC

NB/T47023 FM500-1.0

LWN50-600 RF B=49 H=113

BL300-63FM

BI 1600

WN80(B)-63 FM S=5

SO20-1500RF B=11.8-24546-24 RF20RFFSch6

PL 450-10 FF-�

PL250B-2.5RF

so 50-600 rf77.5 H=248-600 RFH=5831357mp950)F36rfFBSRF S=7.56 RFJ(B)-10rFRF S=23-150