GB/T 12459  弯头 DN 40-Sch10S90E3Dampampampampampamp

DN 40-Sch10S 90E3Dampampampampampamp

pl250-25 rjrf70m50595.6H4

WN100-300 RJ HG/T20615 HG/s5-

PL250(A)-40 RFF-300R5 rf5

WN40(b)-300RFD/=41-1

SO 10-63 RF2.100-15500-1)5

20592wn200(b)-16rf10f/4 S=0@0@-16RFF14mp

pl100(a)-2.5ffF0F)-10fmHG-2

DN50/PN16/12A