TCM 2 745-Paolo Astori SPA – Gattico (IT) EN4011-070

3 Replies to “TCM 2 745-Paolo Astori SPA – Gattico (IT) EN4011-070”

1. QTR, clause 5.4.4
   Max locking torque and min breakaway torque requirement values are reversed.

   QTR, clauses 5.4.1.1 and 5.4.1.2:
   Bolts used for performing tensile tests are made of steel, heat treated to UTS 1800 MPa.
   Is it minimum UTS?
   Companion bolts with 1800 MPa minimum UTS shall break at 55,7 kN minimum (by using ISO9154 formulae).

   Many thanks and have a good day.
   Regards,
   Julien

   Reply

2. Thanks for your comments.

   QTR, clause 5.4.4 –> typo error. QTR reviewed
   QTR clauses 5.4.1.1 and 5.4.1.2 –> test bolts are 1550 – 1800 Mpa Streght class. QTR reviewed.
   Best Regards

   Piero

   Reply

3. Hello Piero,
   Thank you for replying.
   It is good for me now.
   Qualification approved.
   Bet regards,
   Julien

   Reply