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1 Product details: 1.20G seamless high pressure bolier tube 2.O.D:20-219mm,W.T:2- 20mm 3.standard: standard: GB5310-1999,ASTM A106-96a,ASTM A213-95a,JIS G3461-1998, JIS G3462-1998,DIN17175-1979,BS3059 ...
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