Manhole Cover / Maintenance Hole Cover / Drain Hole Cover Texture | Free PBR free download

. Formats: PNG . Free for personal & commercial use.

Preview — Manhole Cover / Maintenance Hole Cover / Drain Hole Cover Texture | Free PBR

IDmanhole-cover-maintenance-hole-cover-drain-hole-cover-texture-free-pbr
Metal
PNG
Size1k (1024x1024px), 2k (2048x2048px), 4k (4096x4096px), 8k (8192x8192px)
sRGB

This seamless manhole cover texture presents a meticulously crafted surface primarily composed of cast iron, a metal renowned for its exceptional durability and strength within urban infrastructure. The base substrate reveals a dense, mineral-rich composition embedded with iron oxides, which are responsible for the texture’s characteristic dark gray coloration accented by subtle reddish-brown weathering spots. These oxidized layers develop naturally over time due to environmental exposure, resulting in a surface that authentically reflects the typical corrosion and patina found on maintenance and drain hole covers. The manufacturing process is evident in the fine grain orientation and occasional surface imperfections, deriving from molten metal carefully poured into molds, which create the distinctive embossed patterns and raised lettering commonly seen on manhole covers across city streets and industrial sites.

The physical and aesthetic properties of this metal cover are accurately captured across all PBR channels to enhance realism and usability in digital applications. The BaseColor/Albedo map displays a balanced palette of muted grays interspersed with rusty hues, simulating the natural aging process of cast iron exposed to urban environmental factors. The Normal map highlights the embossed textures and subtle surface variations caused by years of pedestrian and vehicular wear, while the Roughness channel varies to represent areas where the metal surface is either polished smooth or roughened by oxidation and grime buildup. The Metallic map confirms the fully metallic nature of the material, contributing to realistic reflections and highlights. Ambient Occlusion adds depth to crevices and low-relief details, and the Height/Displacement map emphasizes the texture’s physical depth, enhancing the perception of raised patterns and indentations which bring the cover’s intricate design to life.

Rendered at an impressive 8K resolution, this texture is optimized for high-fidelity environments including Blender, Unreal Engine, and Unity, ensuring crisp details are maintained even in close-up views or expansive urban scenes. The seamless nature of the texture allows for flexible tiling without visible seams, making it ideal for realistic urban maintenance and infrastructure visualizations. For optimal results, adjusting the UV scale to correspond with real-world manhole cover dimensions enhances authenticity, while fine-tuning roughness values can simulate varying degrees of surface wear or accumulation of grime. Additionally, subtle application of height or parallax mapping can significantly improve depth perception, especially when viewed from first-person perspectives or close distances, adding a tactile quality to any 3D project.

How to Use These Seamless PBR Textures in Blender

This guide shows how to connect a full PBR texture set to Principled BSDF in Blender (Cycles or Eevee). Works with any of our seamless textures free download, including PBR PNG materials for Blender / Unreal / Unity.

What’s inside the download

  • *_albedo.png — Base Color (sRGB)
  • *_normal.png — Normal map (Non-Color)
  • *_roughness.png — Roughness (Non-Color)
  • *_metallic.png — Metallic (Non-Color)
  • *_ao.png — Ambient Occlusion (Non-Color)
  • *_height.png — Height / Displacement (Non-Color)
  • *_ORM.png — Packed map (R=AO, G=Roughness, B=Metallic, Non-Color)

Quick start (Node Wrangler, 30 seconds)

  1. Enable the addon: Edit → Preferences → Add-ons → Node Wrangler.
  2. Create a material and select the Principled BSDF node.
  3. Press Ctrl + Shift + T and select the maps albedo, normal, roughness, metallic (skip height and ORM for now) → Open. The addon wires Base Color, Normal (with a Normal Map node), Roughness, and Metallic automatically.
  4. Add AO and Height using the “Manual wiring” steps below (5 and 6).

Manual wiring (full control)

  1. Create a material (Material Properties → New) and open the Shader Editor.
  2. Add an Image Texture node for each map. Set Color Space:
    • AlbedosRGB
    • AO, Roughness, Metallic, Normal, Height, ORMNon-Color
  3. Connect to Principled BSDF:
    • albedoBase Color
    • roughnessRoughness
    • metallicMetallic (for wood this often stays near 0)
    • normalNormal Map node (Type: Tangent Space) → Normal of Principled. If details look “inverted”, enable Invert Y on the Normal Map node.
  4. Ambient Occlusion (AO):
    • Add a MixRGB (or Mix Color) node in mode Multiply.
    • Input A = albedo, Input B = ao, Factor = 1.0.
    • Output of Mix → Base Color of Principled (replaces the direct albedo connection).
  5. Height / Displacement:
    Cycles — true displacement
    1. Material Properties → SettingsDisplacement: Displacement and Bump.
    2. Add a Displacement node: connect heightHeight, set Midlevel = 0.5, Scale = 0.02–0.08 (tune to taste).
    3. Output of Displacement → Material Output → Displacement.
    4. Add geometry density (e.g., Subdivision Surface) so displacement has polygons to work with.
    Eevee (or lightweight Cycles) — bump only
    1. Add a Bump node: heightHeight.
    2. Set Strength = 0.2–0.5, Distance = 0.05–0.1, and connect Normal output to Principled’s Normal.

Using the packed ORM texture (optional)

Instead of separate AO/Roughness/Metallic maps you can use the single *_ORM.png:

  1. Add one Image Texture (Non-Color) → Separate RGB (or Separate Color).
  2. R (red) → AO (use it in the Multiply node with albedo as above).
  3. G (green) → Roughness of Principled.
  4. B (blue) → Metallic of Principled.

UVs & seamless tiling

  1. These textures are seamless. If your mesh has no UVs, go to UV EditingSmart UV Project.
  2. For scale/repeat, add Texture Coordinate (UV)Mapping and plug it into all texture nodes. Increase Mapping → Scale (e.g., 2/2/2) to tile more densely.

Recommended starter values

  • Normal Map Strength: 0.5–1.0
  • Bump Strength: ~0.3
  • Displacement Scale (Cycles): ~0.03

Common pitfalls

  • Wrong Color Space (normals/roughness/etc. must be Non-Color).
  • “Inverted” details → enable Invert Y on the Normal Map node.
  • Over-strong relief → lower Displacement Scale or Bump Strength.

Example: Download Wood Textures and instantly apply parquet or rustic planks inside Blender for architectural visualization.

To add the downloaded texture, go to Add — Texture — Image Texture.



Add a node and click the Open button.



Select the required texture on your hard drive and connect Color to Base Color.


AITEXTURED Tools

Build, preview, and export seamless PBR materials. Generate full map sets from a single image, inspect them in a real-time WebGL viewer, and re-package maps for Unreal, Unity, and Blender—directly in your browser.