The model is scaled correctly and has separate objects for moving parts. Also separate objects for the structure and panels.

Main project in .blend file includes a simple shader with properties for procedural ageing and color variation (custom properties in material).

Also included custom masks to replicate the procedural ageing and color variation in other apps.

Everything is mapped to a single UV-Map with some overlap.

4k PBR textures included:

Clean and aged versions for

BaseColor;

Metallic;

Normal (OpenGL and DirectX);

Roughness.

Extra textures included:

Container_AgeMask.jpg for proceduraly mixing clean and aged look;

Container_AO.jpg ambient occlusion;

Container_ColorMask.jpg for procedural color variation;

Container_Curvature.jpg curvature map rendered from high-poly model;

Container_Id.jpg color-coded materials.

Model has: 

33302 triangles

13724 faces

17799 vertices

Render scenes not included.