GB/T 12459  同心异径管 DN 100×80-8RC

DN 100×80-8 RC

WN 80-900 RJ S=8.5F4 RFF1.0M S=80Sch1.53��’80/data/srcm@5@h8@.5 RJ

DN300-PN40 WN RF Ⅱ S=13

WN20-63G16 RF/2.54 PL1

B BL 20"-2500 LM

BL150-40RFJ.5

B WN 12"-400 RJ

BL500-600 RF S=120-1.0.h40ScschF=

so100-300ff2m

PL 20-