GB/T 12459  弯头 DN 300-Ⅱ-2090ELR80RF

DN 300-Ⅱ-20 90ELR80RF

WN80(a)-150RF A=89 S=5.5 H1=10

SO 3"-150 RF

WN 80-150 RF SCH80S8/l12 S=6B 15

WN80(B)-300 RF Sch40h40 HS-25ROG5 RJ R1ctaпҝҪ77/src-1

WN 50(B)-10 RF S=62.5 &amp-158RF7m0a4 ã6MF00kerB)-hm1.0RF

A BL1350-600RF/144-28295