SRJ BoltEx bolt replacement tool
SRJ BoltEx Flange bolt exchange
SRJ BoltEx hot bolting tool
SRJ BoltEx hot bolting tool

BoltEx® - Bolt Exchange Flange Clamp

Quick and safe to install

+ 1-2 installers

+ Available at short notice

+ Optimised weight for ease of use

+ No damage or disturbance to gasket


Compact and reusable

+ Countersunk bolts in one side for limited access applications

+ Open design allows access to the nut splitter for removing corroded flange bolts

+ Designed for fast and efficient installation and handling

+ Easy to remove and reinstall multiple times

+ Space-efficient storage and transportation


Cost effective

+ Eliminates the need for plant shutdown

+ Extends asset lifetime and reduces maintenance costs


Innovative Gasket Protection System (GPS)

+ GPS prevents over-compression or release of sealing pressure of flange gasket

+ BoltEx® bolts are pre-loaded against the GPS with an equal tension to the flange bolts; compression load on the gasket is therefore maintained as the flange bolts are removed

+ In the case of bolt failure BoltEx® will safely take the load preserving joint integrity

SRJ BoltEx bolt exchange clamp. Flange hot bolting tool
SRJ BoltEx Flange Clamp. Flange hot botling tool.
SRJ BoltEx benefits flange hot bolting

Case Studies


Hot Bolting

Flange Hot Bolting 

Ageing Power Plant

SRJ BoltEx Flange Clamp. Flange hot botling tool. Corroded bolts. Bolt replacement.