Here’s a job where you can let off some steam. A steamfitter specializes in pipe systems that move liquids or gases under high pressure. A pipefitter typically works with pipe systems that hold water, steam, chemicals and fuel. The role of a pipefitter is the use blueprints and certain project specifications to construct and repair piping systems. Both steamfitters and pipefitters must be able to read blueprints, order materials, troubleshoot problems, test and repair systems and know how to install micro electric controls.