GB/T 12459  偏心异径管 DN 1300×15-Sch10SREE30 BBC Sch�

DN 1300×15-Sch10S REE30 BBC Sch�

wn65(b)-16 rf hcr19ni

SO 100(B)-10M

lwn50-600rf sch80h

PL150(B)-16 RFF10B)-16RF° SO25(B)-frR

WN15-300RJB802h030-10R40R0Rj S S500-25mgj scR

PL450B-10RFh406 RFSch60M Sch60 B=381F

BL 500-1500RFF0-0.6.6 \u0(B)-10

470