CFR > Title 46 > Chapter I > Subchapter L > Part 128 > Subpart B CFR > Title 46 > Chapter I > Subchapter L > Part 128 > Subpart B – Materials and Pressure Design Current as of: 2024 | Check for updates | Other versions § 128.210 Class II vital systems–materials § 128.220 Class II non-vital systems–materials and pressure design § 128.230 Penetrations of hulls and watertight bulkheads–materials and pressure design § 128.240 Hydraulic or pneumatic power and control–materials and pressure design