TRUE-TAPER was developed in partnership with our steel suppliers to bring you an optimized coiled tubing string design. This is achieved by minimizing the number of bias welds in a tapered string and assuring that each bias weld be a gauge-to-gauge weld. Conventionally, tapered strings contained stress points at the bias weld juncture which were caused by non-uniform load transfer, but a TRUE-TAPER string achieves a linear taper by gradually varying the thickness of the flat steel strip over almost its entire length. This reduces stress concentrations, the number of bias welds and optimizes strength-to-weight ratio and safety factors.
TRUE-TAPER is offered for QT-800 thru QT-1400 grades.
TRUE-TAPER was developed in partnership with our steel suppliers to bring you an optimized coiled tubing string design. This is achieved by minimizing the number of bias welds in a tapered string and assuring that each bias weld be a gauge-to-gauge weld. Conventionally, tapered strings contained stress points at the bias weld juncture which were caused by non-uniform load transfer, but a TRUE-TAPER string achieves a linear taper by gradually varying the thickness of the flat steel strip over almost its entire length. This reduces stress concentrations, the number of bias welds and optimizes strength-to-weight ratio and safety factors. TRUE-TAPER is offered for QT-800 thru QT-1400 grades.
QT-1000
100,000 psi minimum yield strength
QT-1100
110,000 psi minimum yield strength
QT-1300
130,000 psi minimum yield strength
QT-1400
140,000 psi minimum yield strength
QT-800
80,000 psi minimum yield strength
QT-900
90,000 psi minimum yield strength
We want to hear from you. Contact us with feedback and general inquiries.
Quality Tubing Headquarters10303 Sheldon RoadHouston, TX 77049 +1.281.783.1000+1.800.486.0751qualitytubing@nov.com