Hydraulic bolt tensioners apply direct axial stretch to achieve accurate, uniform bolt preload, eliminating the inaccuracies created by friction in conventional torque methods. By replacing massive mechanical effort with simple hydraulic pressure, bolt tensioning equipment delivers consistent, repeatable results across flanged connections. Our hydraulic tensioners have been designed to fit all standard flanges including ANSI, API and Compact flanges based on Norsok L005, with multiple studs able to be tensioned simultaneously for faster, more efficient joint assembly.