Al,
Cast ConneX are high strength connectors produced from cast steel that complies with ASTM A958 Grade SC 8620 Class 80/50, and include the supplementary requirements in AISC 358. In my situation, the CC part being used is UPC 8.625, which attaches to the open end of a HSS 8.625 A500B round tube using a CJP weld. The base material is not a D 1.1 prequalified base metal, so a PQR and WPS need to be written. Also, the CJP will be welded from one side only.
I found a six page document (link listed below) that has a lot of information about these steel castings, including on page 4, a table for suggested test recommendations for the PQR and the WPS that I plan to use. Cast Connex sent a cast steel plate when they sent the castings, for the qualification test(s).
I have two previous CC encounters with two different companies over the years, and they both simply welded them, without testing, and were never asked for the documentation.
The link…
https://icc-es.org/report-listing/esr-3031/