GB/T 12459  同心异径管 DN 80×65-Ⅱ-4RC34�A S=2.77ذ°ذ@5@3@0RFF3FrRFF Sch20@h1F/N R80S051600

DN 80×65-Ⅱ-4 RC34�A S=2.77ذ°ذ@5@3@0RFF3FrRFF Sch20@h1F/N R80S051600

WN250-300RFSch80- a06RF S.5/40-

WN16A-16RF�c5/

BL450-150 RF S8.8

PL132-16RFSF R

WN50B-25RF S=3.5

WN65-300 RF SCH40 S=2.pqu

bl 80(b)-10 rf54ff s=3

3 RF 2500-0.6 δ0=6

PL32-1