Becht Engineering is expert in the design and analysis of high pressure equipment. Our staff includes the former Chair of the high pressure subgroup of ASME B31.3 responsible for Chapter IX rules and the former long time Chair of the Subgroup on High Pressure Vessels, which is responsible for the ASME Boiler and Pressure Vessel Code, Section VIII, Division 3. We have designed piping and pressure vessels for pressures in excess of 3,500 bar, such as for the manufacture of low density polyethylene (LDPE). We have reviewed and commented on the design of pressure vessels for pressures up to 6,000 bar. Our designs have included high pressure composite vessels for natural gas transport (glass fiber) and hydrogen fuel tanks (carbon fiber). We use our in-house fracture mechanics software for the design of such equipment for cyclic loading.