Pipeline pigging tip graphic comparing coated foam pigs and wire brush pigs for pipeline cleaning — highlighting differences in abrasion levels and use cases.

Pig Coatings & Wire Brushes: What’s the Difference - and When to Use Each

When it comes to foam pigs, it's not just the density that matters - it’s the coating.

From bare foam to full wire coverage, pig coatings play a huge role in how effectively a pig cleans, pushes product, or navigates your pipeline. The right surface finish can help you clear debris, extend pig lifespan, or tackle tougher contaminants without damaging your system.

Let’s break down the most common foam pig coatings, how wire brushes compare, and how to know which pig is best for your job.

1. Bare Foam Pigs

Best for:

  • Drying

  • Dewatering

  • Product batching

  • Light cleaning jobs

Bare foam pigs are uncoated, meaning they’re made entirely from foam with no surface treatment. They’re lightweight, flexible, and cost-effective - perfect for pipelines that don’t need aggressive cleaning.

Tip: These are commonly used during commissioning or post-hydrotesting when only light residue or water needs to be removed.

2. Criss-Cross Coated Foam Pigs

Best for:

  • Regular maintenance

  • Systems with wax, soft debris, or buildup

  • Moderate product pushing

These pigs feature a polyurethane coating in a criss-cross pattern over the foam body. This design increases surface tension and adds light abrasion without compromising flexibility - making them ideal for ongoing maintenance or batching.

Stocked in multiple sizes - ready to ship across Australia. Browse our pig range.

3. Wire Brush Foam Pigs

Best for:

  • Moderate to aggressive cleaning

  • Removing scale, rust, or hardened wax

  • Steel pipelines with stubborn buildup

Wire brush pigs take things a step further by embedding steel or stainless-steel brush strips into the foam. These pigs scrape away deposits that softer pigs can’t shift - while still retaining a foam core for flexibility.

Note: These are not suitable for plastic-lined or coated internal surfaces, as the wire may cause damage.

4. Total Wire Pigs

Best for:

  • Heavy-duty internal cleaning

  • Pre-inspection prep

  • Industrial-grade scale removal

Total Wire Pigs are the most abrasive option. They’re covered in a full outer layer of wire brush material, providing maximum surface contact and scraping force.

While they’re incredibly effective, they’re also specialised - best used when you know your pipeline is robust enough to handle aggressive abrasion.

So… Which Pig Should You Choose?

Here’s a quick cheat sheet:

 Pig Type Cleaning Strength Flexibility Best For
Bare Foam Low High Drying, batching
Criss-Cross Coated Medium Medium Regular cleaning
Wire Brush High Medium-Low Debris, rust, wax
Total Wire Very High     Low

Scale, prep work

Need help deciding? We can help match the pig to your pipeline size, contents, and cleaning goals.

Shop Smart - Or Ask Us First

PSSS stocks a wide range of coated and wire brush pigs - and we’re here to help you choose the right one. Whether you’re cleaning for inspection, pushing product, or maintaining flow, the right coating can make all the difference.

You can browse our full pig range here:
View Pipeline Pig Products

Contact us or give us a call today.

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