1. OD: 32-920mm 2. Thickness: 4-35mm 3. Material: 10#, 20#, Q295, Q345, 45#, ST44/52, 40Mn2，35Cr，35CrMoA 4. Standard: GB/T8162 ASTM A53, ASTM A106, ASTMA519, ASTMA252, DIN1629, JIS G 3441, EN 10210-1 ...
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