GB/T 12459  异径三通 DN 750×750×450-Sch80STRFsch8

DN 450×450×750-Sch80S TRFsch8

PL 250(B)-6 RFLSb)RFrF H4/cS

SO500-25M δ0 r00-1

lwn20-150 rf sch855Bu00

PL65(B)-10 RF D=184 C

WN600-150RF-Sch301-1/2"-300

PL 200(B)-10 RFSF Sch80SM800-1.6/

WN 250(B)-16 RF03.56=.

SO80(B)-16RF800-0.25.60 R

WN250-1