400 Joints of 4.5” 20ft  with 4” Full Hole Connection, Aluminum drill pipe.  It is roughly only 200lbs/Jt.

Tool joints are 4137 MVCa4 alloy steel with a minimum yield strength of 120,000psi.

Tubes are extruded 2014 T6 aluminum alloy with yield strength of 58,000psi and max yield of 64,000psi.

320,000lbs tensile yield and 21,000 ft/lbs rotational yield.

Can haul almost double the amount of pipe before being overweight.