Bolt Tensioners

BOLTSTRONG is the indigenous brand of ABS engaged in developing “Made in India” Hydraulic bolt tensioners.

Standard Bolt Tensioners

Standard tensioners are designed to fit most of ANSI B 16.5, 16.47, API flanges.

Foundation Tensioners

Perfect for wind turbine foundation bolts, these long stroke spring assisted tensioners come with optional cycle counter.


Single-stage tensioners are versatile and reliable hydraulic bolt tensioners suitable for high load and tight space applications. These tools feature low height profile to use when there are overhead obstructions.

Multi Stage Tensioners

This compact tensioner is perfect for high load and tight access applications, typically on wind turbines. Available as multi stage or a single stage version, it is hard wearing and ensures maximum cyclic life.

Special Tensioners

This range of tensioners is made to fit all Norsok, Compact oil and gas flanges catering to higher loads and reduced space restrictions.