Our produce is described as below: a) O.D.: 6 - 630mm b) W.T.: 1 - 24mm c) standard: ASTM,DIN,JIS,GB/T14975-2002,GB/T14976-2002,GB13296-91,GB9948-88 ,ASTM/ASME A213/SA213,ASTM/ASME A312/SA312,ASTM/ASME A269/SA269,DIN 17458-85,DIN 17456-85,JIS G 3459,JIS G 3463 ,JIS G 3448 JIS G 3446 etc.. d)steel grade: 304/304L 316/316L 321/F321/321H TP304/304L TP316/316L
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