The ASME Boiler and Pressure Vessel Code regulates all requirements for pressure-bearing components with regard to materials, calculation, manufacture, inspection, testing, certification and overpressure protection.
The code is published by the American Society of Mechanical Engineers. ASME is roughly comparable to the German VDI and has over 120,000 members worldwide.
The ASME Code itself is divided into individual sections for the different types of vessels (steam generators, boilers, pressure vessels, etc.), manufacturing steps (welding, NDT) and materials.