Here we have a distributorship that will make up any kind of air hose or line we need. They are primarily a fuel station dist. (gas pumps, hoses, etc.) but also do the air lines. They all have hydraulically crimped fittings and are dependable. This is in podunk Montana, so I would think there should be someplace near you that can do this type of thing. I personally don't trust barbed fittings and hose clamps, although it is probably unfounded.