ASTM A-53 Gr B
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英语翻译1 Pipe sch 40,20" dia ASTM 106 GR-B OR API 5L GR-B,Seaml
pipe(smls) mnpt astm a106 gr.b &zn asme b36 10m sch40
PIPE,SMLS,BE,S-20,CS ASTM SA106 GR.B,ASME-B36.10M