Check out these new N pipe and steel I-beam loads from KAN-RAIL http://nscalesupply.com/KAN/KAN-Pipe.html http://nscalesupply.com/KAN/KAN-I-Beam.html eNjoy
These loads are again a bit pricey for what are really quite easy loads to produce. Also the tubes are very thick section, and would have been better made from thin walled brass or aluminium. Or another way is to drill out the end for a short distance, to make the pipe look finer in section. They probably do not stand out so much in normal viewing, but Scott's close-up photography can be cruel in N scale