TT Technologies Machine Roschen Part # Mfg. Method Tube OD TJ OD Length Weight Connection Max Torque (ft./lbs.) Bend Radius Bend Radius (Feet) Rack
(lbs.) (% Slope
  Per Rod)
Grundodrill 4X 4X Inertia Welded 1.500″ 1.900″ 5′ 23 Firestick 1 #200 950 5.10% 98′ 32

Roschen Drill Pipe is made to the industry standard S135 Specification.


Tensile Strength 145,000 PSI (The maximum stress the material will sustain before fracture.)


Yield Strength 135,000 PSI (The stress corresponding to a specified permanent (plastic) deformation – the point at which the material yields and won't spring back)


Elongation 7% EUL (The increase in the gauge length, measured after fracture of the specimen within the gauge length, usually expressed as a percentage of the original gauge length / EUL Extension Under Load)