GB/T 12459  弯头 DN 150-Sch10S90ESh059616a2 R=21 H=180F.sc6=59 D=200/-1600-10-

DN 150-Sch10S 90ESh059616a2 R=21 H=180F.sc6=59 D=200/-1600-10-

SO 20-150 RF0rfF-0.609hej0S HG/Trf/rf s

BL50-150 RF sch40htm 50c

WN600-600 FM SM0A 10-4.@Rh-0F0@b

bl40-16 RF1180eb

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WN 200-300 RF SCH440Sa5 R