In the archive the sets of elements of steel chimney systems made of stainless steel by two leading European manufacturers: Schiedel and Jeremias.

– Schiedel Permeter d130mm (black)
– Schiedel ICS25 d130mm (completely identical to the Permeter system differs only in the steel grade in ICS the outer wall is polished stainless steel).
– Schiedel Kerastar d160mm (inner pipe is ceramic).
– Jeremias DW-FU d130mm

D materials VRay in section BRDF is worth Microfaset GTR (GGX).