Question 1

What rubber compounds does AU Industries use for tank and pipe lining?

Accepted Answer

We line with four standard compounds: 40 Shore natural rubber for fine slurry abrasion (pipes, cyclones), 60 Shore natural rubber for impact zones with larger particles (chutes, hoppers), Bromobutyl 50 Shore for acid and chemical exposure (CIL/CIP tanks, acid plants), and Nitrile 60 Shore for oil and fuel contact. Other custom compounds can be developed as needed with our R&D department. The right choice depends on particle size, pH, temperature, and flow rate — we run a site assessment before specifying.

Question 2

How long does rubber lining last in mining slurry applications?

Accepted Answer

Service life varies with slurry type, particle size, velocity, and chemistry, but properly specified 40 Shore lining typically delivers 12–36 months in slurry pipes. Our A38 pink premium compound extends this further in heavy abrasion zones, and our premium 60 Shore pink (high-silica) compound delivers cut-resistant performance for applications where sharp particles damage standard 60 Shore rubber. Bromobutyl and nitrile linings tend to outlast natural rubber where chemicals or oils are the failure mode.

Question 3

Do you install rubber lining on-site?

Accepted Answer

Yes. We provide on-site rubber lining services across South Africa, Mozambique, Namibia, Zambia, Botswana, and Zimbabwe. Our teams handle the full process including grit blasting up to SA 3 standard, bonded rubber application, and spark testing on site.

Question 4

How is the surface prepared before rubber lining?

Accepted Answer

All surfaces are grit blasted up to SA 3 standard before lining. Adhesion failure is the most common cause of premature lining failure, and SA 3 preparation ensures the bonding agent makes a clean mechanical and chemical bond with the substrate.