Hydraullic tensioning is not measured by Torque. Rather it is controlled by the Pressure applied in teh Hydraullic stud tensioning device.
This pressure is arraived based on the desired stress to be induced in the studs which in turn is based on Design parameters ( pressure, temp, gasket type /dimensions/materials ).
Also the applied pressure may vary from one model to another.
The stud tensioner provides you all the technical stuff . If you need the applied pressure also will be provided by the vendor against their stud tensioner model being used. Please contact stud tensioner suppliers.
Regards,
Tagore
On Sun, Aug 2, 2009 at 8:03 AM, Mohammad Javeed <mmubasharjaveed@gmail.com> wrote:
Dear all
Have a nice day
I need your help about one query regarding torque value. We have a one flange joint of dia 36" RF CL. 900 material A350-LF2.and bolt length is 800mm. As per our client requirement this tightening should be done with hydraulic tensioning system. So what should be the torque value for this flange?
Thanks
M javed
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