Real world elements for interior design. Hydrochloric acid wash/rusted cast Iron, Stainless Steel and chrome plated cast iron ventilation and exposed plumbing.
The cast iron arrives brute, takes about 2 weeks to acid wash them before assembly, 3 weeks is better to get a good rusty crust. Then varnish is added to protect the rust layer, making very sure not to scratch the heavy pipe once assembled.
