On carbon steel pipe fittings, sizes like 2-1/2", 5" are this size normal? Someone told me this sizes are not normal and are not being use anymore. Is this just for economic purposes? Why is this so?
We normally purchase 2 1/2- inch fittings. 5-inch fittings are more difficult to procur but are available. We have had a few recent projects with 5-inch piping designed and have not had a major problem finding material.