... is almost only used in pressure vessel.Cp grade 4 can be used in some fitting parts and fastening ... , Gr7, Gr9, Gr10, Gr11, Gr12, Gr19, Gr23, A1Hot rolledRM>4.75~60.0400~30001000~4000Cold rolledYMST0.30~6.0400~10001000 ... 10.0400~30001000~4000Cold rolledST1.0~4.0400~10001000~3000TB5, TB6, TB8Cold rolledST0.30~4.75400~10001000~3000Note: The minimum ... 2.0~3.0±0.18————>3.0~4.0±0.22————>4.0~6.0±0.35±0.40——>6 ...