... size 2. F316, F51,35CrMo, 36CrNiMo4 and so on 3. Heat treatment 4. detailed record cards of ... high-pressure flange2)Description of product: manufactured and inspected according to the national standards or ... JB4726-2000,JB4727-2000, JB4728-2000, and JB/75000.8.19983)dimensions≤2,000mm, per piece ... ≤15 tons,4)including forgings, machinery cutting, rough cutting, and ...