I need proper way how to setup WST parameters to act same like delphi based soap service.
Make sure you're using WST source from WST trunk.
I would suggest posting error reports to the WST forum. I doubt if you'll get much help here.
I note that several of the SOAP services I use have added REST services as an alternative to SOAP. REST is typically much easier to work with than SOAP since no WSDL file or parsing is needed, etc. I don't know if that's a possibility for you, but I throw it out there as an idea. (For anyone wondering about SOAP vs. REST, there are lot's of articles on that, for example:
http://spf13.com/post/soap-vs-rest/).
In my experience with WST, manual changes to the source generated by parsing the WSDL file is often needed.