GB/T 12459  弯头 DN 150-Sch80S180EL

DN 150-Sch80S 180EL

SP-2 DN=18

WN 80-900 FM S=11082

PL 200A-25FF 5f sch1601000 pl2

WN 20-25 RF S=322

PL250-16RFS=4.5Ss

BL80-10 RFF1000-/G

SO 20"-150RF

WN600-300 FM scAF(A))-10rfb7..000-116RF S4600-300 RF/

WN 150-900 RFJR2-F0F21=19 f(B)-25Mf5 RJf