Presents a new pipe gripping method using spherical balls to replace conventional die slips with the potential for significantly less damage to and better load distribution around pipe during handling. Describes the testing scope, results and analysis of ball versus slip comparison testing conducted under identical conditions.
Vandervort, K.; Wharton, S.; Jarski, J. and Yousef F. “Development and Metallurgical Testing of New Spherical Gripping Technology vs. Traditional Die Slips” Proceedings of AADE National Technical Conference and Exhibition (Paper No. AADE-11-NTCE-30), 12-14 April, 2011, Houston, TX.