1) Standard: ASTM/ASME A312, ASTM/ASME A213/SA213, ASTM/ASME A269, ASTM511, JIS G 3459, JIS GS3463, GS3467 JIS G3448, DIN IN EN10214-2006(DIN 17458) , DIN EN10297-2006(DIN 17456) , 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. 7) Surface: Pickled & Annealed. 8) Packing: Each in a PVC bag, Bundle with knitted plastic bag, wooden case or according to customers' request. 9) Application: The products are widely used in fertilizer, petroleum, central-station, boiler, power station, shiping military, chemical industry, environment protection, traffic, metallurgy and mine, printing and dyeing, food industry, medical equipement, and so on. 10) Test: Eddy current / hydrostatic/ Ultrasonic/ Intergranular Corrosion or according to customers' request. 11) Supplementary Requirments customers required are acceptable.