GB/T 12459  同心异径管 DN 500×350-12RC

DN 500×350-12 RC

WN600-150 RF t16

PL 150-16 RF=1200=80=108G/T20615-RFsN12RJ b=4 C

hg/t20592+wn100-25fm

bl 150-63 rf

PL32(B)-10RF 30408 C=sch

SO 100(B)-16 RF�f(5 S=18�0=20 D-1RF

wn50-10 rjch

SO 80-150 RF

PL250-10RF RJ03pnbspyun50 RF S=12 h=165b1