1). Forged rings: ID up to 800mm Od uo to 2000mm Thickness up to 2000mm 2). Melting Process: EAF+LF+VD 3). Heat treatment: Annealed 4). Finish and Appearance: Rough Turned 5). Ultrasonic testing: Acc to SEP1921, Group 3, Class C/c 6). Reduction Ratio: Minimum 3: 1 7). Cleanliness: As per K4, max. 20 8). The content of H2: Less than 2.0ppm 9). Straightness: Maxi 3 mm per meter. 10). Diameter Tolerance: -0/+3mm 11). Test certificate: Acc. To EN10204/3.1
