GB/T 12459  异径三通 DN 350×350×50-Sch40TR

DN 350×350×50-Sch40 TR

3 M 650-1.6/50SCF60�M55 Sch1605F5RFaF5��j@5@150

3 A6f FM 450-1.0Sc6F0 R

WN 65-16 RF SCFSS80S=5

wn600-10 rf gb/

1 M600-1.28RF22f/ RF Sc

WN150(B)-16 FM70-165rfR

BL300-6RFFMch0 SRF50 RF Sch4S��j@5@1506r80 T

WN400-150RF