DIN Spec 91383-2021 published (JTIAP V2): 

    • As predicted DIN Spec 91383 was updated during the last months and enhanced by the several recommendations of JT-Workflow-Forum und dem JT-Implementer-Forum of the international prostep ivip Association, as well as German VDA AK PLM. It is available until now.
    • The new DIN Spec can be downloaded under https://www.beuth.de/de/technische-regel/din-spec-91383/341903011 free of charge.

    • Related to this work the  referenced documents  prostep ivip recommendations PSI-14-x:2021 were also updated
      PSI 14_1_V3 JTIAP format specification defines the JT-Format
      PSI 14_2_V2 Industrial JT Use-Cases describes thirty one Use-Cases, which are implemented and used in industry succesfully.
      Both recommendations can be downloaded under https://www.prostep.org/mediathek/veroeffentlichungen/?no_cache=1.

    • We will be still engaged to bring this new specification into the formal ISO process for updating  ISO 14306 related to to international industrial demands as soon as possible

    • For further questions or new ideas please don´t hesitate to contact me





Implementations on DIN Spec 91383 (JTIAP V2): results of the fourth survey

  • In March 2019, the fourth worldwide survey on the current activities concerning the implementation of the JT Industrial Application Package Version 2 (DIN Spec 91383)  was carried out. Here are the results in summary:

  • CAD ISV´s:

    • Autotdesk will deploy JTIAP V2 fully for their authoring-tools and integrate it in their ATF-translator
    • DS will support ISO 14306 ed1 as well as  JTIAP V2 by partner solutions
    • PTC uses Siemens JT toolkit for their JT compatible products 
    • Siemens products that create and utilize JT are compatible with JTIAP V2


    • Eleven out of fifteen system-integrators have a complete solution available today
    • Two have parts of the solution available and are engaged in further development
    • Two are waiting for customer request

  • To sum up: 
  • We have reached in a short periode of time an outstandig maturity
  • On the user side we have more than 250 Mio JT files in the databases done by more than 100.000 Users 
  • We have the direct support from nearly all ISV´s
  • We have integration solutions from nearly all relevant systemintegrators
  • So the deployment project of JTIAP V2 and DIN Spec 91383 has completed it´s mission and can be closed. All further activities will be done by prostep ivip JT Workflow and Implementor Forum

 News Januar 2019

  • DIN SPEC 91383 is now formally approved and publishedl
  • The continuous development of JT standardisation has reached the next milestone. JT Industrial Application Package V2 has been updated and enhanced (e.g. taking ISO14306-2017 into account). So we have generated a formal and public available document with the crediablity of the German Standarisation Organisation DIN. DIN Spec 91383 - 2018 can now be used and has the potential to be the starting description for the next version of ISO 14306.

  • The document combine different specifications and standards to a comprehensive industrial approved concept:
    • The definition of precise geometry is based on ISO 14306-2017, with  XT-B-Rep as mandatory mathematical representation 
    • The XML-structure- and kinematic-definition is based on ISO 10303  (STEP AP 242 -XML)
    • The extensions of JT specification and a mor powerful data-compression is based on  prostep ivip recommendation PSI 14-1:2016 (JTIAP V2)
    • The use-case-descriptions of JT Workflow-Forum are linked to  prostep ivip recommendation PSI 14-2:2015
  • The specification  is available and can be downloaded under  Download DIN Spec 91383


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