1) Standard: ASTM/ASME A312, ASTM/ASME A213/SA213, ASTM/ASME A269, ASTM511GOST 9940, GOST9941, JIS G 3459, JIS GS3463, GS3467 JIS G3448, DIN IN EN10214-2006(DIN 17458), DIN EN10297-2006(DIN 17456), GL LR DNV etc.
2) Outside diameter: 6mm-630mm.
3) Wall thickness: 1mm-30mm.
4) Length: According to customers' requests.
5) Tolerance: Meet the standard. 6) Material: 304, 304L, 310S, 316, 316L, 321, 321H, etc.