John East leaves after 49 years with the company, while Roger Heywood, the representative for the north west of England, has retired with 25 years service.
Having starting his career as a plater and welder at Street Crane, East moved onto internal sales in 1973 after a period as a fitter in the installation team.
After 16 years in this position East changed focus to outside sales for the south of England, basing himself in Bath. He said: "In my retirement I am looking forward to catching up with interests in caravanning, cycling and fly fishing."
Heywood started with the company in 1987 after an earlier career in engineering. He said: "It will be good to have a life not driven by the alarm clock, but I have lots of outside interests to take up the time, particularly my grandchildren."
Martin Street, chairman of Street Crane, said: "I wish John and Roger a long and happy retirement, they have both given stalwart service to the company. We are on a growth path and currently have 11 vacancies in various departments, including sales, engineering and electrical design and development, all offering rewarding long term work."