GB/T 12459  偏心异径管 DN 50×10-Sch80SREFB=245S=14HEEEEE SCH80

DN 50×10-Sch80S REFB=245S=14HEEEEE SCH80

WN 1 1/2"-150 RF S=3.2@0rf62SFRJ

wn100-600rj-s26aS1=331FCr17F9FRch

BL200-40 FM S=-36 RF RFFÃ00(B)-10

wn50-150rfb=49)- d=24

WN 80-150 RF Sch80S160 TRRF0-1. sCRS6 rf1n=vF)-20

WN65b-10RF25 r

WN250-10RF