GB/T 12459  偏心异径管 DN 600×10-Sch120RE00 REb6.850 65B)6=0/

DN 600×10-Sch120 RE00 REb6.850 65B)6=0/

pl80(b)-16 rf b=4rfS rj sch80 s=u00a3/u00c6/u

wn450(b)-25 fm s=82061Fefluxos=a10FF40

BL 400-16 RF0RF`06Cr19N0FS00 RF B=29F S=70 fm

WN 20-150 RF Sch80S

SO 4"-600 RF

SW 50-300 FM

WN250-300 RF

A21000

PL20b-