GB/T 12459  弯头 DN 32-590E3Drf15ذ ذپذ

DN 32-5 90E3Drf15ذ ذپذ

WN 450(B)-16 M S=8h8&6= w5@RFSc0 RF b=093f/@R06R0(B)-16R

wn450b-40rf

SO 450(B)-16 RF N= D= f1= n= L= C= H= R= B= K= d=

DN20-PN250 WN F Ⅱh400 R=

WN250(A)-2500RJШ°

BL 200(B)-10 RF0400 G Sch800-

WN25B-40 RFFMFM10=m1600

w