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M36x3x280mm 35CrMo 12.9 Level High Pressure Bolt Connector for Shell Plate EB699 1. Material Grade:45 Steel,40 Cr,A173,H7,A3 Steel,SS304,SS301S,SS316L 2. Grade:4.8,6.8,8.8,10.9,12.9 3. Sizes...