The objective of both, Bolt Torquing and Bolt Tensioning, is the same to create a clamping force that holds parts together. The purpose of both methods is to stretch and put load on a bolt or stud for achieving accurate required load to prevent leaks. Bolt Torquing method generates load by turning a nut on a helical thread that is the more common but less accurate for achieving bolt load. While bolt torquing is preferable to tensioning in some scenarios like:

Bolt Tensioning method eliminates the disadvantages of torquing by applying load on bolt or stud in different ways. Tensioning is a hands free bolting method in which the load applied directly to the stud can be measured. So it substantially increases bolt load accuracy than torquing method of bolting. SPAR TECH’s Bolt Tensioning method is highly recommended for critical flanges which require bolt-load accuracy and zero-leak outcomes. Thus our bolt tensioning is the faster, more accurate, and safer method for achieving optimal load.

Hydraulic bolt torquing is a mechanical fastening method used to provide a torque force for loosening or tightening the machine’s bolts in an industrial plant. It works by using hydraulic liquids to provide high amounts of torque to loosen and tighten bolts during plant maintenance, industry turnarounds, partial unit shutdowns, or equipment outages.

Spar Tech’s Hydraulic Bolt Torquing services can help to prevent leaks on flanges, exchangers, vessels, or on any application where tightness of bolts is critical to prevent leaks. It is often used in the oil and gas, mining, and shipbuilding industries.

While hydraulic bolt tensioning is a quick and easy method for tightening large diameter bolts to high and accurate pre-loads. Opposite conventional methods hydraulic tensioning does not use either torque or require any forceful turning of the nut or bolt, such as impact wrenches, flogging spanners or hydraulic torque wrenches.