Custom Fabrication SMI's Custom Fabrication capabilities are designed to meet your needs no matter how demanding. Click Here to find out more. Offshore Construction SMI Companies has been providing service to the offshore oil and gas industry since 1987. Click Here to find out more. Plant Construction The combinations of products and servicves we can offer for your next project are virtually unlimited. Click Here to find out more. OEM Manufacturing Whether a one of a kind production or a multiple unit contract, our manufacturing division is up for the challenge. Click Here to find out more.