Is my homemade chandelier design safe and does it meet code?
Here are the pertinent National Code Articles:


  410.6 Listing Required.  All luminaires, lampholders, and retrofit kits shall be listed


And


  Article 100 Definitions. Listed.  Equipment, materials, or services included in a list published by an organization that is acceptable to the authority having jurisdiction and concerned with evaluation of products or services, that maintains periodic inspection of production of listed equipment or materials or periodic evaluation of services, and whose listing states that either the equipment, material, or service meets appropriate designated standards or has been tested and found suitable for a specified purpose.


That being the case, I was at a commercial building in Austin, Texas that had almost the same design but with old time lamps and copper plumbing pipe. Definitely NOT a commercial fixture. However, the inspector approved it and that will override the listing requirement.

So, if your local Electrical Inspector says it's good then you are good.

Cool design. Good Luck!