HRSGs and Auxiliaries Specification

Hi,

I am working for an engineering and construction industry that specializes in power and desalination station for power plant. I've been recently assigned on HRSGs and auxiliaries to search three devices that include a pipe centering device for welding, pipe welding and cutting lathe, and valve seat machining device. I have to admit I'm just new in this business so I am not quite familiar with these devices. To begin with, I want to get the detail information of these 3 items so I can start contacting the vendors for a quote. Any suggestions on how to get the technical details as well as the contact information? Any helpful information that you can provide me with will be much appreciated.

Thanks,

Richard S.